FBO_SOW_SN5_ANTENNA_UPGRADE.doc

SN5 ANTENNA UPGRADE

MATERIAL/EQUIPMENT/SUPPLY

This is a Request for Quotation (RFQ) for a commercial item(s) prepared in accordance with the information in FAR Part 13 SALES TAX EXEMPTION: The Contractor is hereby advised that the United States Government and Agencies thereof are exempt from State and Local Government tax by virtue of Article 6 of the United States Constitution. No exemption certificate is required.

1. INTRODUCTION

The Naval Surface Warfare Center, Corona Division (NSWC Corona), Performance Assessment Department, Code 44 (PA44) is required to upgrade a government furnished equipment (GFE) auto tracking antenna system originally purchased from Malibu Research. This specification establishes the minimum requirements for the upgraded portable automatic tracking telemetry antenna system.

2. BACKGROUND

The portable telemetry antenna systems are integral components of our shipboard portable telemetry systems. Typical shipboard environment has been defined by the subsections of 5.5.9. These systems will be used to track and receive live missile and target telemetry radio frequency (RF) signals during events for this project. TM data is used in the performance and readiness assessment of fleet combat systems. The upgraded portable telemetry antenna will be installed temporarily aboard US naval vessels as part of the NSWC Corona PATAS (Portable Advanced Telemetry Acquisition System) suite of portable telemetry hardware. It is therefore essential that components of this antenna system are compatible with existing NSWC Corona PATAS auto tracking systems. In order to meet these requirements, PA44 requires the portable telemetry antenna systems described in the following specifications. Sections below will identify requirements for components of the systems that shall be interchangeable with existing equipment.

The antenna system is initially required to auto-track (RF) signals in L and S Bands (1435-1850 MHz and 2200-2400 MHz), but must be designed such that appropriate RF modifications to track in C-Band (4400–5150 MHz) are easily added, either by adding or swapping subassemblies, at a future date as frequency requirements evolve.

3. SCOPE/SPECIFICATIONS

4. REQUIREMENTS

The telemetry antenna system shall consist of the following:

GFE RF Cabling

GFE Shipping cases

GFE Dry air system

GFE pedestal with riser base

GFE servo amplifier enclosure

GFE parabolic reflector

GFE motors

NEW Conical Scanning RF Feed assembly

NEW Antenna control unit (ACU)

NEW Servo amplifiers

NEW Camera subsystem

NEW sea-stabilized Inertial Navigation System (INS)

NEW Interface cabling between the ACU and pedestal

4.1 GENERAL REQUIREMENTS

The primary requirement is to provide an upgraded antenna system which incorporates simplicity and reliability without degrading its past performance. The design and construction shall facilitate ease of installation, operation, repair and maintenance, and transportability. Every effort shall be made to keep the end user in mind; the design shall minimize the size and weight of previously identified subsystems. Size and weight of each subsystem shall allow for movement and assembly by a maximum of two persons. Controls, displays and monitoring devices shall allow complete operation by a single operator. The system shall concurrently provide, except for mutually exclusive parameters, the performance specified herein without making any special adjustments.

Along with the aforementioned general requirements, the systems shall meet the following requirements:

The systems are intended to be disassembled for packing/shipping into the above mentioned subassemblies, manageable by a maximum of two trained persons. Those subassemblies will be packed into reusable lightweight shipping containers which will be arranged onto standard 40” x 48” shipping pallets. Lightweight is defined as no more than 140 lbs, gross weight.

An ACU that is capable of manually controlling the antenna, slaving to internal or remote Ethernet cueing data, and auto-tracking. Integral to the ACU shall be support for four (4) external tracking receivers. In addition the ACU shall have built-in support for the specified inertial measurement unit (IMU) with differential GPS to compensate for ship movement (yaw, pitch and roll).

The systems shall be designed for shipboard use with considerations made for radar electromagnetic interference (EMI), water intrusion resistance, salt water corrosion resistance, operation in strong winds, as defined in section 3.5.9 for environmental, and 3.6.2 for EMI

The systems delivered shall also include:

All cables, hoses, and hardware necessary to assemble the system

A nameplate containing the following information shall be affixed to each antenna system:

Contract number and contractor identity

Statement that the system was manufactured for Naval Surface Warfare Center, Corona

System serial number

4.1.1 Materials, Parts, and Processes

4.1.1.1 Interchangeability

Mechanical and electrical interchangeability shall exist between like assemblies, sub-assemblies, and replaceable parts, regardless of the manufacturer or supplier.

4.1.1.2 Instruction Plates

The system shall be equipped with permanently attached instruction plates. Warning and caution sign plates describing special or important procedures to be followed in the assembly, disassembly, operation, and servicing of the system shall be provided. Particular consideration shall be given to the hazards of rotating machinery, electrical voltages, accidental movement of parts, and other hazardous conditions. Instruction plates shall remain legible under normal use for a minimum period of five years.

4.1.1.3 Components and Parts Identification

The type and appropriate reference designation of each component and part shall be marked adjacent to the component. Identification markings shall be legible and permanent.

4.1.1.4 Handling Provisions

Equipment requiring removal from its enclosure or mounting for test, adjustments, or repair shall be equipped with two suitably spaced handles when possible. Additionally, devices shall be provided where necessary to protect parts when equipment is removed or inverted for servicing.

4.1.1.5 Fastening Devices

Selection of type and quantity of fasteners shall be made with due consideration to the physical and electromagnetic environment specified in sections 4.6.2 and 4.5.9 respectively. Fasteners directly exposed to the atmosphere shall be fabricated of corrosion-resistant marine grade stainless steel. Quick release fasteners or captive hardware shall be provided for all parts which require frequent access and those used for disconnecting antenna subassemblies for packing.

4.1.1.6 Threaded Devices

Threaded screws and bolts shall engage with tapped or threaded parts for a distance of not less than the diameter of the screws or bolts. External screw holes shall use the same corrosion-resistant marine grade stainless steel as the screw. Thread-cutting screws and bolts shall not be used. All fasteners used for the assembly/disassembly of the system or subassembly packing/unpacking for shipments shall be captive.

4.1.2 Construction Materials and Practices 4.1.2.1 Dissimilar Metals

If it is necessary that any combination of dissimilar metals be assembled in intimate contact, the procedures in MIL-STD-889B shall be followed.

4.1.2.2 Non-Metals

Non-Metals used shall be moisture resistant, corrosion resistant, flame retarding and solar UV resistant to the parameters defined in section 4.5.9. Materials which are nutrients for mold and fungi shall not be used.

4.1.2.3 Corrosion Prevention

Materials, parts, processes, and construction techniques utilized shall maximize corrosion resistance in a salt spray shipboard environment, as defined in section 4.5.9.

4.1.2.4 Equipment Wiring

Wiring shall be securely anchored to the chassis or enclosure with non-metallic cable clamps where required to prevent conductor displacement. Cabling installed between hinged or movable parts shall have sufficient cable slack to completely open or move the part without applying any tension to wiring, and mechanical protection to prevent any cable damage. Wiring exterior to a unit chassis shall be contained within an opaque polyurethane cable jacket. Wherever wires and cables are installed through holes in metal partitions of less than 1/8 inch thickness, the holes shall be equipped with grommets for mechanical protection of wire insulation from abrasion. Panels 1/8 inch or more in thickness shall have grommets, or the hole’s edges rounded to a radius equal to one-half the thickness of the panel.

4.1.2.5 Cable Identification

Cables shall be identified by permanent, non-metallic, color-coded cable designator markers having weather and abrasion resistance. Cable markers attached at approximately 12 inches from each cable end shall be provided for all cables. Cable markers shall bear hot-stamped print or equally permanent cable and connector designators using numbers and letters such as J3 (for example).

4.1.2.6 Wire Terminals

Soldering lugs, studs, and terminals shall be notched or otherwise provided with means for mechanically securing the wire lead prior to the application of solder.

4.1.2.7 Relays

Relays provided with the system shall be sealed plug-in types fitted with quick release clamps. Relays containing mercury shall not be used. Noise generating relays shall be equipped with noise suppressors.

4.1.2.8 Switches

Switches and controls containing mercury shall not be used. Safety guards to prevent accidental operation of switches shall be provided for personnel safety and for avoiding equipment damage, except where such safeguards would seriously impair operation of the system.

4.1.2.9 Motors

The internal motors are GFE items, it is not envisioned that the reflector will be altered in any way.

4.1.2.10 Ventilation

All equipment shall be designed to operate without the need for forced air conditioning, and shall include its own mechanism(s) for ventilation.

4.1.2.11 High Voltage Protection

The system shall incorporate necessary provisions to protect installing, operating and servicing personnel from accidental contact with electrical potentials in excess of 60 volts. Such provisions shall include covers, enclosures, discharge devices, and other necessary physical safeguards, and shall also include appropriate warning markings for all contacts, terminals, and like devices having potentials in excess of 200 volts RMS or DC.

4.1.2.12 Mechanical Safeguards

The system shall incorporate necessary provisions to protect installing, operating and servicing personnel from personal injury. Suitable protection, such as covers, grills and guards shall be provided to prevent contact with moving mechanical parts such as gears, fans, and belts when equipment is complete and operating. Sharp edges or projections shall be avoided. Equipment design shall include necessary provisions to prevent accidental movement of parts and equipment which could cause injury to personnel as well as possible equipment damage.

4.1.3 Useful Life

Useful life of the equipment, with contractor prescribed maintenance program, shall be, at minimum, 15 years.

4.2 Antenna System

The systems shall be Right Hand Circular Polarized (RHCP) and Left Hand Circular Polarized (LHCP). The received signals may have any of the characteristics described in the Inter-Range Instrumentation Group (IRIG) document, Telemetry Standards, IRIG Standard 106-15.

The antenna shall have a primary operating frequency range of 1435-1850 MHz and 2200-2400 MHz. Provisions shall be made throughout the entire system to allow the future addition of coverage of the 4400-5150 MHz

4.3 Antenna System Figure of Merit (G/T)

With an 8’ reflector assembly installed, the minimum system G/T shall be 9.3 dB/K @ 2300 MHz and 5.4 dB/K @ 1480 MHz.

With an 6’ reflector assembly installed, the minimum system G/T shall be 6.8 dB/K @ 2300 MHz and 2.9 dB/K @ 1480 MHz.

The system shall maintain the specified G/T without switching or other active RF path changing.

The system shall separately auto-track in the RHC and LHC polarization channels and may also track in a combined mode. Auto-tracking in the combined mode will provide at least the same quality of track that would be obtained by using the best single channel. The system shall automatically track in azimuth and elevation at angular velocities from 0 to 25 degrees per second and at angular accelerations and de-accelerations from 0 to 25 degrees per second, per second. The system azimuth and elevation tracking errors shall not exceed ±30 percent of the measured antenna beamwidth. The system shall track smoothly at the specified rates with a maximum error of ±0.3 degrees due to system non-linearities such as saturation, limiting, dead zones, and backlash.

4.4 Mechanical Requirements

Subassembly size and weight shall be such that two trained persons can move, install, and set up the system. The antenna shall be capable of being disassembled for packing and shipping, or unpacked and assembled in two hours or less using normal hand tools, by two trained personnel. All subassembly mechanical interfaces for assembly/disassembly of the systems shall use captive stainless hardware. Each antenna subassembly will be packed/shipped in contractor provided lightweight transit cases. These shall be reusable lightweight plastic or equivalent packing/shipping cases, with lockable quick release fasteners. All cases shall fit on three (3) standard shipping pallets, each with maximum dimensions of 40” x 48” x 56” (l, w, h) per antenna system. Maximum weight of one subassembly only, packed in its shipping case, may be up to 100 pounds. The use of counterweights to balance the elevation assembly is not allowed.

4.5 Antenna Pedestal Subsystem 4.5.1 Mechanical

Replaceable parts shall not be permanently installed, such as by welding, riveting, or similar methods. Access covers and doors shall be provided where necessary to perform inspection, adjustment or service to enclosed equipment. Hinged covers and doors shall be equipped with devices to permit their retention in the open position and prevent accidental closing. The type and spacing of cover and door fasteners shall be consistent with the degree of enclosure integrity and frequency of access required. The pedestal shall be provided with azimuth and elevation axis manual locking devices. The elevation axis shall be capable of being mechanically locked in the 90 degree position. Indicators shall be provided at the control panel to show when these locking devices are in place.

The time in which any bearings may be expected to fail shall not be less than 25,000 hours under maximum dynamic loads. The height of the antenna pedestal subassembly shall provide for a minimum clearance of 6 inches between the base level of the subassembly and the lowest part of the moving antenna assembly. Attachment points for a minimum of four tie-downs shall be included on the subassembly, located such that attachment of tie-downs will not obstruct operation of the antenna.

4.5.2 Pedestal Cabling

Due to the nature of the specific ship the antenna systems would support, the antennas will be installed topside, while the ACU will be operated from inside the skin of the ship. There are permanently installed fiber optic and serial cables that run through to the interior of the ship. It is required that the pedestal cables interface with the ship’s permanently installed cables. The cabling between the Antenna Control Unit (ACU) and Antenna Pedestal subsystem may be either copper or fiber optic, fiber optic as the preferred option.

If copper is used, it is required that the end of the control cable use MILSPEC connector MS3476W22-55P in order to properly interface to permanently installed ship’s cabling. If copper is used, the maximum cable diameter shall be 0.6 inches.

If fiber optic cable is used, it is required that the end of the control cable use a MILSPEC standard MSTC 1000 connector in order to properly mate to permanently installed ship’s cabling.

It is required that the cabling between individual antenna subassemblies be copper. The control cable shall be rated for shipboard outdoor use and have water tight corrosion resistant MILSPEC bayonet locking connectors. Unless otherwise specified, pedestal cabling between sub-assemblies, such as the pedestal and feed enclosure, shall be connectorized to facilitate disassembly and reassembly. The cabling supplying electrical power to the pedestal equipment shall be terminated with weather-proofed, harsh environment type field replaceable connectors which facilitate disconnection and reconnection. The installation of internal pedestal wiring may be made by connectorized or terminal strip type wiring techniques. All subassemblies that come apart for packing/shipping shall have connectorized cabling. A strain relief method, e.g., woven grip strain relief, or equivalent, shall be employed for each applicable cable. Cables provided shall be as specified; or if not specified, shall satisfy the environmental and performance requirements specified.

200 feet of cable shall be provided with each antenna, with each 200 foot length made up of two (2) 100 foot interconnected lengths such that one of the 100 foot lengths could be used alone if desired.

4.5.3 Accompanying Electronics: Differential GPS and Inertial Measurement Unit

Integration of the GPS and IMU can be coordinated with the contractor after the contract has been awarded.

4.5.3.1 Differential GPS

Differential GPS unit shall, at minimum, meet the following specifications:

Communication

GPS Sensor

< 2.5 m (< 2.7 yd) RMS (autonomous, no SA)

MECHANICAL

60 cm L x 16 cm W x 18 cm H

(23.6 in L x 6.3 in W x 7.1 in H)

1.50 kg (3.3 lb)

POWER

ENVIROMENTAL

(-40 degrees Fahrenheit to 185 degrees Fahrenheit)

(Dry and damp heat)

(-25.6 degrees Fahrenheit to 165.2 degrees Fahrenheit)

(Dry and damp heat)

4.5.3.2 Inertial Measurement Unit (IMU)

The IMU unit shall, at minimum, meet the following specifications:

ACCURACY

INTERFACES

Outputs: Synchronization (PPS), Virtual DMI

4 inputs / 2 outputs

MECHANICAL

46 x 45 x 24 mm (1.8 x 1.77 x 0.9 inches)

49 g (0.1 lb)

PRESSURE SENSOR

ELECTRICAL & ENVIROMENTAL

(-40 to 185 deg Fahrenheit)

4.5.4 Pedestal Electrical Power

Similar to the pedestal control cable, the pedestal power cable will also have to run through permanently installed ship’s cabling. It is required that the end of the pedestal power cable be terminated with the following connector: MS3476W12-3P.

The antenna pedestal assembly shall be equipped with two electrical power distribution systems for supplying power separately to the antenna system and to accessories. Each power distribution system shall be equipped with a main circuit breaker and the necessary branch circuit breakers required for individual pedestal assembly circuits. The pedestal shall be able to auto-range and operate with 100 - 240 VAC, single-phase, 3-wire, 50/60 Hz

4.5.5 Drive Amplifiers

It is required that the antenna above deck subsystem include a space to mount a line amplifier with dimensions of 15” x 6” x 6”, with AC power switched by the auxiliary power control at the ACU. Two pairs of RF connectors to the exterior are also required in conjunction. The amplifiers shall be mounted, such that maintenance can be performed by sliding the amplifiers out of their enclosure. It is required that drive amplifiers and other on-antenna electrical components/electronics be mounted in a weatherproof enclosure mounted on the elevation yoke so as to provide some amount of counterweight effect, and include an access door or panel. The drive amplifiers shall be powered via the ACU accessory power, see section 5.9.

4.5.6 Pointing Accuracy

The RF pointing axis shall remain within ±0.10 degree of the mechanical pointing axis when operating within the specified limits and modes of operation. The electrical pointing axis shall be aligned to within ±0.1 degree of the mechanical pointing axis.

4.5.7 Azimuth Limits

While a slip ring/rotary joint for azimuth rotation is allowable, a cable wrap assembly with a minimum antenna azimuth rotation capability of 0 to +/- 400 degrees cable wrap is acceptable also. If a cable wrap system is furnished, energy absorbing mechanical stops shall be provided to prevent damage to the antenna system in the event of electrical limit failure. The antenna system shall be provided with servo azimuth limits to prevent movement to the mechanical limits under normal operation. Also, if a cable wrap system is used, a clear cable wrap indication is required at the ACU.

4.5.8 Elevation Limits

It is required that the elevation usable limits either allow for a minimum range of -5 to 95 degrees with servo and other electronics mounted on the EL yoke as counterweight substitute, similar to the NSWC Corona Malibu antenna design, or an elevation range of -5 to +185 degrees, referenced to earth’s tangential plane. Energy absorbing mechanical stops shall be provided to prevent damage to the antenna system in the event of electrical limit failure. The antenna system shall be provided with servo elevation limits to prevent movement to the mechanical limits under normal operation.

4.5.9 Environmental

Equipment exposed to the weather shall meet specified requirements and sustain no damage when subjected to the following conditions. The damage requirement applies to both periods of equipment operation and non-operation.

4.5.9.1 Ambient Temperature

The antenna shall have an ambient operational temperature range of -10ºC to +50ºC, and an ambient survival temperature range of -20ºC to +60ºC.

4.5.9.2 Wind

The antenna shall survive no-ice wind loading of at least 40 mi/hr gusting to 60 mi/hr in any pointing direction, operating, and 120 mi/hr in the stowed position.

4.5.9.3 Solar Radiation

The antenna shall operate while exposed to direct on-axis incident solar radiation of at least 350 BTU/ft²-hr.

4.5.9.4 Humidity

The antenna shall operate while continuously exposed to relative humidity ranging from 5 to 100 percent, condensing, salt spray environment typical of a shipboard installation, rainfall up to three inches per hour, and atmospheric pressure ranging from 940 to 1050 millibars.

4.5.10 Safety

The physical finish of the antenna, pedestal, and riser shall be smooth with all sharp edges, burrs and machining evidence removed. The design of the antenna and mount shall not permit user personnel to come in contact with hazardous electrical, mechanical, chemical, or gaseous conditions during the course of normal, prudent operation and maintenance, or during operation and maintenance recommended by the manufacturer. The design of the system shall include safeguards that preclude an operator error or a system fault from damaging the antenna.

4.5.11 Audible Alarm

The antenna pedestal assembly shall be configured with an audible warning device that alerts personnel in the vicinity of the assembly when power is about to be applied from the indoor controller to the drive motors of the antenna. The warning circuitry shall include an adjustable time delay, continuously variable from between 5 and 15 seconds, that prohibits the drive motors from energizing until the warning signal has timed out.

4.5.12 Motor Brakes

Brakes shall be provided such that when the antenna is powered down (or in STANDBY mode), both axis are locked in place. A brake release switch shall be provided on the pedestal assembly for each axis that allows the brake to be released and the antenna moved manually.

4.5.13 Finish

The antenna assembly surfaces shall be coated with thermally diffusive white paint, high gloss color 17875 per FED-STD-595B (or contractor’s closest equivalent). All lettering shall be black, semi-gloss color 27040 per FED-STD-595B (or contractor’s closest equivalent). The finish shall include adequate surface cleaning, priming, and finish coats to assure high quality finish with good adhesion, and be free of defects.

4.6 Antenna Feed Subsystem

The feed system shall be a scanning type. No AGC or manual gain control shall be used, except for tracking receivers, to achieve the dynamic range specified. The feed shall maintain a spurious-free dynamic range of 50 dB for third order intermodulation products as defined in IRIG document 118-89, Appendix II-a, paragraph 1.2. Filters shall be provided in front of the LNAs with the passbands of 1435 to 1835 MHz and 2200 to 2400 MHz with a minimum of 30 dB of rejection by 100 MHz out of band. Insertion losses of the filters should be no more than 0.3 dB.

4.6.1 Mechanical

The feed subsystem shall provide a weatherproof enclosure for the feed elements, the LNAs, filters, and associated components. The housing shall be provided with removable covers to allow access to replaceable parts. The feed mounting brackets and supports shall allow for ease of removing the feed for service or replacement. The feed assembly shall weigh no more than 30 pounds and shall be easily installed by one person. Benchmarks shall be provided on the feed and its mounting hardware to enable field installation and alignment without the use of electrical realignment procedures in order to obtain specified system performance. The contractor shall furnish a foam padded weatherproof reusable packing/shipping container for the feed subsystem and associated cables and tubing.

4.6.2 Protection

The antenna must be capable of operating in the vicinity, within approximately 300 feet of a 10 Watt telemetry signal and high power radars. Appropriate protection must be included to prevent damage in the case that the antenna is inadvertently pointed at the 10 Watt signal.

4.6.3 Low Noise Amplifiers (LNAs)

LNA’s should include specifications and gain that meet or exceed the CIAO LNA’s part number CA13-382

4.7 Antenna Reflector Subsystem

The antenna reflector is a GFE item, it is not envisioned that the reflector will be altered in any way.

4.8 Servo Subsystem

4.8.1 Servo Response Modes

Controls shall be provided to enable and select the servo mode of operation. Servo power shall be applied by selecting on the ACU any operational modes other than standby.

The capability of separately selecting the following servo response modes for each axis shall be provided. Servo compensation shall be implemented at all times to minimize significant overshoot or lag. Determination and compensation in hardware and software of the position and rate loops for the entire system shall take into account the various current and feedback loops associated with the servo amplifiers. These will take into account for the loads, velocities and accelerations of the system with a 4’ reflector. The reflector shall be compensated while including the shipboard stabilization equipment (Pitch, Roll and Heading).

4.8.1.1 Wide Mode

This mode shall provide maximum servo response. This is the normal operating position. The servo loop bandwidth of this setting is approximately 1.0 Hz to 2.5 Hz.

4.8.1.2 Narrow Mode

This mode shall provide a decreased servo response. It shall be used for tracking long distance signals or high noise environment signals. The servo loop bandwidth ratio shall be approximately 0.5 Hz to 1.0 Hz.

4.9 Antenna Control Unit (ACU) Subsystem

4.9.1 Mechanical Requirements

The ACU shall consist of not more than one distinct assembly suitable for installation in a 19-inch equipment rack, per EIA RS-310-C. Each ACU shall be provided with equipment rack slides (where physically possible) and front panel handles to permit extending the equipment for servicing. The ACU chassis shall be designed with the goal to not exceed 12.25 inches high, 19 inches wide (panel), 17 inches wide (chassis), and 22 inches deep. The ACU shall not weigh more than 35 pounds.

The front panel shall have external media interfaces. At a minimum the front panel of the ACU shall have no less than two USB 2.0 or 3.0 interfaces. In addition the operating system (OS) drives (or other storage) shall be removable from front or back panel of the ACU. Solid state drives are required.

Handwheels shall be provided at the front panel of the ACU for each axis. The handwheel rate shall be adjustable via a setting in the ACU

4.9.1.1 Equipment Mounting

ACU shall be installed using equipment rack slides. The front panel size shall be a standard 19 inch wide as per EIA RS-310-C.

4.9.1.2 Equipment Rack Slides

Equipment rack slides shall provide for:

Complete withdrawal of slide mounted ACU from the cabinet, while the ACU is still wired and operating

Automatic locking for extended positions

Quick chassis release mechanisms for convenient slip-in and slip-out servicing

Interchangeability of identical equipment

Long lasting and reliable performance

It is recommended that General Devices rack slides are used.

4.9.2 Electrical Requirements

The ACU shall be equipped with internal electrical power supplies rated for 100 - 240 VAC auto-ranging, single-phase, 3-wire, 50/60 Hz service and shall be equipped with a fuse and/or circuit breaker, and provide power to all integral antenna functions.

The power control for the ACU and subsequently associated displays and indicators shall be protected to prevent accidental activation/deactivation. When this control is activated, the system shall perform any internal checks necessary and then place the upgraded system in local control mode with the antenna motor drives in standby mode.

4.9.3 Environmental Requirements

The ACU shall have an ambient operational temperature range of 0 degree C to +50 degree C, and an ambient survival temperature range of -20 degree C to +60 degree C. ACU shall include sufficient thermal sinking and ventilation to maintain performance specifications during extended periods of power application and operation while mounted inside of metal box. The ACU shall be capable of operation in 20% to 90% non-condensing humidity.

4.9.4 Safety

The physical finish of the new ACU and associated equipment shall be smooth with all sharp edges, burrs, and machining evidence removed. The design of the ACU shall not permit personnel to come in contact with hazardous electrical, mechanical, chemical, or gaseous condition during the course of normal, prudent operation and maintenance.

4.9.5 Finish

The new ACU and associated support equipment shall be painted/colored/finished in accordance with the best commercial practices using color number 27040 (black semi-gloss) per FED-STD-595B or vendor’s closest equivalent. The ACU shall include adequate surface cleaning, priming, and finish coats to assure high quality finish with good adhesion and shall be free of defects. All lettering shall be with white paint, high gloss color 17875 per FED-STD-595B or vendor’s closest equivalent.

4.9.6 Technical Performance

It is required that the ACU be based on a Linux 64-bit or Windows 7 64-bit based operating system.

The ACU shall support no less than four external tracking receivers.

The ACU shall include antenna camera data and controls interfaces to pass video and controls to external monitor/camera control system.

The ACU shall also have integral support for the inertial measurement unit (IMU) to compensate for ship movement (yaw, pitch and roll).

The ACU shall consist of the antenna positioner control, preamplifier control, camera system power control. All controls, signal lights, meters, and other indicators or warning devices shall be prominently displayed on equipment front panels. Autotrack error and relative received signal strength shall be derived from a generic telemetry receiver RSSI circuit (detected AM and AGC/SSR) output.

The ACU system shall be capable of running trajectory simulation files using Earth-Centered Inertial (ECI) and Azimuth, Elevation, slant Range (AER) coordinates. The ACU shall also support satellite trajectory TLE files. In addition the ACU shall be capable of accepting remote cueing data via Ethernet. Support for commonly used PMRF iNET MSG-25 cueing data format is required. The ACU shall also be capable of reporting antenna position, azimuth and elevation data via Ethernet in the same formats.

4.9.7 Antenna Control Modes

The antenna control assembly shall provide all necessary controls to implement the modes described in the following sections. Unless otherwise stated, the modes listed below apply to both azimuth and elevation axis. Each control may use a title that is slightly different than the ones listed, but shall perform a substantially equivalent function.

4.9.7.1 Local

Operator shall have front panel control of all ACU functions. These functions shall be by means of a touch screen and hand-wheels.

4.9.7.2 Remote

An identical redundant ACU, physically remote from the local ACU or a remote computer running an ACU software package, shall be capable of controlling all local ACU functions. This mode shall be implemented via Ethernet. This link shall be full duplex and utilize the contractors’ interface and protocol format that shall be provided at delivery of the system. The system shall capable of responding to all remote commands, unless the command syntax is in error, or operational conditions will not allow the command to be executed. In these cases, the system shall notify the remote ACU as to why the command cannot be completed in layman’s terms and the error shall be logged. This mode shall also allow for the computer to query the local system for conditional status and for the local system to respond with the requested information. Should the interface link between to remote ACU and local ACU be severed, the local ACU will immediately default to standby mode of operation.

If a remote computer running the software package is required, the contractor shall provide the ACU software package, to be installed on an existing government owned computer.

4.9.8 Power Modes

4.9.8.1 Standby

This mode will be activated when primary power is initially turned on, or when there is an interruption in primary power, or an external controlling device or computer loses communications. Azimuth and elevation axis brakes shall be applied and drive motor power shall be inhibited. When switching from standby to an operate mode, an adjustable time delay shall be employed. During the delay period, the azimuth and elevation motors shall be inoperable. Simultaneously, the warning horn system located at the antenna pedestal shall be sounded. The delay time shall be adjustable from 5-15 seconds.

4.9.8.2 Feed

Controls shall be provided for turning power on/off to the feed scan. This functionality should extend to optional C-band feed assembly. Scan rate shall be 30 Hz or more.

4.9.8.3 Servo Power

This control turns on the servo drive amplifiers. This control shall be interlocked to allow activation only when the system is in standby mode. Deactivation of this control will automatically return the system to standby.

4.9.8.4 LNA Power

ACU software controls shall be provided for turning power on/off to the low noise amplifiers.

4.9.8.5 Auxiliary Power

ACU software controls shall be provided for turning A/C power on/off to system accessories at the antenna. This power feature shall be applied to the drive amplifiers from section 4.5.5.

4.9.9 Tracking Modes 4.9.9.1 Manual

When this mode is activated, drive power shall be applied and the position of the antenna shall be controlled by the position/rate controls. Rate or slew control shall be implemented as a momentary control, such that when the control is released, commanded action ceases and the antenna stops. This control shall be used in conjunction with a separate control that allows the angular rate to be continuously variable from 0 to 25 degrees per second. Position control is similar but shall move either / both axes to a desired position and stop within 0.1 degrees. Servo compensation shall be implemented at all times to reduce significant overshoot or lag.

4.9.9.2 Auto-track

This mode is also known as forced autotrack and enables the ACU to autotrack regardless of the receiver AGC level. This mode shall also be available to the operator and will override any previously selected mode. Servo compensation shall be implemented at all times to maintain the target within a 3 dB beamwidth without significant overshoot or lag.

4.9.9.3 Auto-Acquire

When the Auto-Acquire is activated the antenna system shall remain in the previous mode until a preset threshold value is exceeded by the selected receiver’s AGC/SSR voltage level. When the threshold is exceeded and the antenna enters the auto-track mode, an indicator shall show that the antenna is in the auto-track active mode. An AM/scanner reference demodulator system within the ACU shall convert the AM from the receiver(s) into a servo error signal for both the azimuth and elevation axes. This error will contain magnitude and direction information and steer the antenna onto the target source as long as there is an established AGC level in the acquire mode or AM signal if only in the auto track active mode. Logic shall be such that if the ACU drops from auto track mode, it will return to the previous mode.

4.9.9.3.1 Threshold Adjust

Controls shall be provided to allow the operator to adjust the input signal level at which the system switches from auto track acquire/enable to auto track mode. A hysteresis setting is also required to set a buffer between track enable and disable. Independent threshold settings are required for each of the four tracking receivers. A separate phase setting for each receiver is also required.

4.9.10 Antenna System Display and Indicators

The system shall be provided with, but not limited to, the following displays and indicators. Illuminated switches and indicators shall be used when possible in order to provide positive indications of system modes and configurations. The antenna controls, displays, and indicators shall be arranged in logical and human-engineered manner.

Application of power at all levels

Stow pins in/out

Application/selection of all system modes

Threshold level/auto-track indicator

Tracking error, dual axis cross pointers or equivalent, polarity adjustable

Open interlocks indicators

Elevation servo limits and azimuth servo limits indicators

Azimuth pointing angle; dial and/or digital readout, both with 0.1 degree resolution

Elevation pointing angle; dial and/or digital readout, both with 0.1 degree resolution

If not utilizing a rotary joint, display cable wrap indicator, cable centering meter

Tracking receiver RSSI AGC/SSR level (Relative signal strength)

4.10 Camera Subsystem

4.10.1 Situational Awareness Camera

This camera system includes a pan and tilt surveillance/safety camera that will be mounted separately from the antenna system. The intention is to observe the area around the antenna during operation. The mounting system shall be such that the camera can be mounted on a standard shipboard rail/pole or mounted to the deck of a ship via tripod stand.

The situational awareness camera cabling to the ACU shall be integrated with the control cable.

The situational awareness camera shall, at minimum, meet the following specifications:

ELECTRICAL

MECHANICAL

4.10.2 Boresight High Definition Camera

The camera system shall include a small, lightweight, high resolution boresight camera. Integration of this camera shall provide minimum blockage. This camera shall be utilized as an acquisition aid.

Camera shall be no greater than a length of 5 inches and a diameter of 3 inches if camera is of a cylindrical form. If camera is of a spherical form, it shall have a diameter no greater than 4 inches.

The HD boresight camera cabling to the ACU shall be integrated with the control cable. The ACU must have an NTSC camera video BNC output for external display/recording.

4.10.3 Electrical Power

Each camera shall be compatible with pedestal supplied power. Power to each camera shall be applied via a front panel switch at the ACU such that the operator can selectively turn on/turn off each camera.

4.11 Dry Air Subsystem

The contractor shall provide a dry air system. Any portion of the systems that houses electronics or equipment that would be damaged by water intrusion shall be connected to the dry air system. Heaters may be included if deemed necessary to control condensation. When these are added, they will include provision for both heater power switching on/off and thermal control separately from the dry air system.

4.11.1 Mechanical Requirements

The system shall be provided with an integral dry air system. The following equipment, at a minimum, shall be connected to the dry air system: RF feed and amplifier housing, pedestal, and any other enclosures containing sensitive electronics. Heaters may also be used as necessary to control condensation, and will include provision for switching on/off. The dry air system may be integral to the pedestal or a separate unit. If a separate unit, the unit shall have support structure to mount unit to pedestal, or tie down points for separate mounting.

4.11.2 Electrical Power

The dry air system shall draw power from commercial shipboard power with ability to operate from 100-240V (autoranging), unless the dry air system is integral to the pedestal.

4.11.3 Environment

Refer to section 4.5.9

4.11.3.1 Ambient Temperature

Refer to section 4.5.9.1

4.11.3.2 Wind

Refer to section 4.5.9.2

4.11.3.3 Humidity

Refer to section 4.5.9.4

52.204-19, Incorporation by Reference of Representations and Certifications (Dec 2014).

52.209-10, Prohibition on Contracting with Inverted Domestic Corporations (Dec 2014).

52.212-4 Contract Terms and Conditions--Commercial Items DEC 2014

52.212-5 Contract Terms and Conditions Required to Implement Statutes or Executive Orders— Commercial Items (MAR 2016).

52.219-6 -Notice of Total Small Business Set-Aside NOV 2011

52.222-50 Combating Trafficking in Persons

52.223-18, Encouraging Contractor Policies to Ban Text Messaging While Driving (Aug 2011).

52.225-1 Buy American-Supplies MAY 2014

52.232-39 Unenforceability of Unauthorized Obligations JUN 2013

52.232-40, Providing Accelerated Payments to Small Business Subcontractors (Dec 2013).

52.233-3, Protest After Award (Aug 1996).

52.233-4, Applicable Law for Breach of Contract Claim (Oct 2004).

52.245-9 , Use and Charges (Apr 2012);

252.203-7000 Requirements relating to compensation of Former DOD Officials

252.203-7002, Requirement to Inform Employees of Whistleblower Rights (Sep 2013).

252.204-7003, Control of Government Work Product (Apr 1992).

252.204-7006 Billing Instructions OCT 2005

252.204-7008 Compliance with Safeguarding Covered Defense Information Controls (Dec 2015)

252.204-7012 Safeguarding covered Defense Information and Cyber Incident Reporting (Dec 2015)

252.204-7015, Disclosure of Information to Litigation Support Contractors (Feb 2014).

252.225-7048, Export Controlled Items (Jun 2013).

252.232-7003 Electronic Submission of Payment Requests and Receiving Reports JUN 2012

252.232-7010, Levies on Contract Payments (Dec 2006).

252.243-7001 Pricing Of Contract Modifications DEC 1991

252.247-7023, Transportation of Supplies by Sea (Apr 2014)

252.232-7006 WIDE AREA WORKFLOW PAYMENT INSTRUCTIONS (JUN 2012)

(a) Definitions. As used in this clause--

Department of Defense Activity Address Code (DoDAAC) is a six position code that uniquely identifies a unit, activity, or organization.

Document type means the type of payment request or receiving report available for creation in Wide Area WorkFlow (WAWF).

Local processing office (LPO) is the office responsible for payment certification when payment certification is done external to the entitlement system.

(b) Electronic invoicing. The WAWF system is the method to electronically process vendor payment requests and receiving reports, as authorized by DFARS 252.232-7003, Electronic Submission of Payment Requests and Receiving Reports.

(c) WAWF access. To access WAWF, the Contractor shall--

(1) Have a designated electronic business point of contact in the Central Contractor Registration at https://www.acquisition.gov; and

(2) Be registered to use WAWF at https://wawf.eb.mil/ following the step-by-step procedures for self-registration available at this Web site.

(d) WAWF training. The Contractor should follow the training instructions of the WAWF Web-Based Training Course and use the Practice Training Site before submitting payment requests through

WAWF. Both can be accessed by selecting the “Web Based Training” link on the WAWF home page at https://wawf.eb.mil/.

(e) WAWF methods of document submission. Document submissions may be via Web entry, Electronic Data Interchange, or File Transfer Protocol.

(f) WAWF payment instructions. The Contractor must use the following information when submitting payment requests and receiving reports in WAWF for this contract/order:

(1) Document type. The Contractor shall use the following document type(s).

Invoice and Receiving Report (Combo) – this is an invoice and receiving report (DD250) created at the same time.

Note: If a “Combo” document type is identified but not supportable by the Contractor's business systems, an “Invoice” (stand-alone) and “Receiving Report” (stand-alone) document type may be used instead.)

(2) Inspection/acceptance location. The Contractor shall select the following inspection/acceptance location(s) in WAWF, as specified by the contracting officer.

Inspection Location: Destination

Acceptance Location: Destination

(3) Document routing. The Contractor shall use the information in the Routing Data Table below only to fill in applicable fields in WAWF when creating payment requests and receiving reports in the system.

Routing Data Table

Field Name in WAWF

Data to be entered in WAWF

Contract Number

TBD

Delivery Order Number

CAGE Code

Pay Official DoDAAC

N62827

Issue By DoDAAC

N64267

Admin DoDAAC

Inspect By DoDAAC

N/A

Ship To Code

Ship From Code

Mark For Code

Service Approver (DoDAAC)

N/A

Service Acceptor (DoDAAC)

Accept at Other DoDAAC

LPO DoDAAC

DCAA Auditor DoDAAC

Other DoDAAC(s)

(4) Payment request and supporting documentation. The Contractor shall ensure a payment request includes appropriate contract line item and subline item descriptions of the work performed or supplies delivered, unit price/cost per unit, fee (if applicable), and all relevant back-up documentation, as defined in DFARS Appendix F, (e.g. timesheets) in support of each payment request.

(5) WAWF email notifications. The Contractor shall enter the email address…