Survey_Equipment_Specs.pdf

Description of Supplies and Salient Characteristics

GNSS/GPS

Precise Positioning Service (PPS) and Standard Positioning Service (SPS) Performance Standards - Accuracy requirements under normal conditions which may vary depending on satellite geometry, atmospheric conditions, obstacles, multipath, distance from the base receiver and baseline lengths.

Differential GNSS positioning (Mapping GNSS Receivers)

Horizontal 0.25 m + 1 ppm RMS (Carrier phase) Vertical 0.50 m + 1 ppm RMS (Code phase) SBAS differential positioning accuracy less than 5 m RMS

According to the California Dept. of Transportation Survey Manual, Chapter 5 – Classifications of Accuracy and Standards, Section 5.3-1(h): “This grade can determine location of points with an accuracy of 3 feet (1 m), usually better. The data can be collected with a hand-held GNSS receiver with an internal antenna and a satellite-based augmentation system (SBAS). The receiver must be capable of converting WGS-84 satellite signals to the NAD 83 datum, otherwise the data is considered to be 33 ft. accuracy.

Resource grade accuracy is considered “network”, as the positions aren’t tied to project control points.

This order is usually used for locating features such as trees, signs, or culverts for a GIS database.

Resource grade surveys are for horizontal locations only.”

High-Precision Static (Survey GNSS Receivers)

Horizontal 5 mm + 0.1 ppm RMS Vertical 5 mm + 0.5 ppm RMS

According to the California Dept. of Transportation Survey Manual, Chapter 5 – Classifications of Accuracy and Standards, Section 5.3-1(a): “The 5 mm standard for vertical control is equivalent to First Order, Class I vertical standards, when proper field procedures are followed.”

Static and Fast Static (Survey GNSS Receivers)

Horizontal 5 mm + 0.5 ppm RMS Vertical 5 mm + 0.5 ppm RMS

According to the California Dept. of Transportation Survey Manual, Chapter 5 – Classifications of Accuracy and Standards, Section 5.3-1(a): “The 5 mm standard for vertical control is equivalent to First Order, Class I vertical standards, when proper field procedures are followed.”

Real Time Kinematic (RTK) surveying / Single Baseline <30 km (Survey GNSS Receivers)

Horizontal 10 mm + 1 ppm RMS Vertical 20 mm + 1 ppm RMS

Centimeter level RTK precision for GNSS receivers is generally what is considered “survey-grade RTK.”

Vertical precisions are always 2-3 x less precise than horizontal precisions. This level of precision is acceptable for many survey applications including setting control, stakeout, and topographic surveys.

According to the California Dept. of Transportation Survey Manual, Chapter 5 – Classifications of Accuracy and Standards, Section 5.3-1(c): “A GNSS survey can be used to establish 2-cm vertical accuracy using NGS standards (NOS NGS-58 and NOS NGS-59). This is equivalent to the proportional Third Order vertical accuracy standards. This is the minimum level of accuracy that would be required for the vertical control of a state highway project.”

Parts per million (ppm) refers to the degradation of positional precision with increasing baseline from the GNSS base station (i.e. an RTK rover that is 1 km away from the GNSS base station will incur 1 mm of additional error). Low ppm directly relates to the ability to measure survey-grade positions at greater distance from the base receiver, which saves time by limiting the number of base setups needed.

Network RTK (Survey GNSS Receivers) Horizontal 10 mm + 0.5 ppm RMS Vertical 20 mm + 0.5 ppm RMS RTK start-up time for specified precisions max 10 seconds

Centimeter level RTK precision for GNSS receivers is generally what is considered “survey-grade RTK.”

Vertical precisions are always 2-3 x less precise than horizontal precisions. This level of precision is acceptable for many survey applications including setting control, stakeout, and topographic surveys.

According to the California Dept. of Transportation Survey Manual, Chapter 5 – Classifications of Accuracy and Standards, Section 5.3-1(c): “A GNSS survey can be used to establish 2-cm vertical accuracy using NGS standards (NOS NGS-58 and NOS NGS-59). This is equivalent to the proportional Third Order vertical accuracy standards. This is the minimum level of accuracy that would be required for the vertical control of a state highway project.”

Physical Specifications

Survey GNSS receivers

Radio Modem Integrated, sealed 450 MHz wide band receiver/transmitter

Ability to be a stand-alone base or rover Transmit power: ½ W or greater Frequency Range of internal radio 410-470 MHz

Receiver needs to be able to operate as a stand-alone single base for RTK data collection without the need to utilize an external transceiver radio. This allows for an absolute minimum of the amount of equipment needed for single-base RTK data collection.

Wideband radio (410 – 470 MHz) allows world-wide operation without the need for special permissions, external patch radios or additional equipment Certifications

Operability with AFNet Integration with AFNet Approved office software for NIPR computers required

Radio Certifications FCC Compliance for CONUS and OCONUS operations

Satellite Specifications and Real Time Correction Sources

Satellite Constellations and Signals GNSS enabled – options to include current and planned constellations:

GPS (L1C/A, L1C, L2C, L2E, L5); GLONASS

(L1C/A, L1P, L2C/A, L2P, L3); Galileo (GIOVE- A and GIOVE-B, E1, E5a, E5B); Beidou (B1, B2, B3)

GNSS Channels 440 (Survey Receivers); 220 (Mapping Receivers) Positioning Rate 20 Hz Real Time Correction Sources Radio modem broadcast

Real time network Satellite or internet based broadcasts to include:

SBAS, PPP or other global subscription options

Battery and Operating Time

Internal receiver battery (without radios) Minimum 5 hours Internal receiver battery (with radio usage) 450 MHz receive only option – 5 hours

450 MHz receive/transmit option (.5W or 2.0 W)

– 3 hours

Removable and Swappable Battery required For all day continuous use Safety Standards Meet EPA Safety Standards

Other

Communication Ports USB, Serial, 7 pin serial to be compatible with legacy equipment, Bluetooth

Cellular, Bluetooth and Wi-Fi Cellular, Bluetooth and Wifi capable with the ability for it to be turned off by user interface

Operating temperature –20 °C to +49 °C (–4 °F +120 °F) Storage Temperature –30 °C to +70 °C (–22 °F +158 °F) International Protection Rating IP67 Humidity 100% Dimensions Compact and deployable. Not to exceed 20 cm x

20 cm x 15 cm (length x width x height).

Weight Not to exceed 1.8 kg (4 lbs.)

Shock and Vibration 4ft onto plywood over concrete

MIL-STD-810G, Method 516.6, Procedure IV Data Storage 50 MB internal memory Input and Output Formats RTCM 2.1, RTCM 2.3, RTCM 3.0, RTCM 3.1, NMEA

Size and weight of receivers needs to be kept to an absolute minimum to accommodate the limited cargo space/weight limit aboard aircraft (helicopters, airplanes, etc.)

IP (Ingress Protection) ratings are defined in international standard EN 60529 (British BS EN

60529:1992, European IEC 60509:1989). They are used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies (tools, dirt etc.) and moisture.

RADIO

High Over-the-Air Link Rate 19,200 bps (both GMSK and 4FSK); Supports 1 Hz RTK corrections for multi-constellation receivers

Configurable Transmit Power Power settings: 0.1 Watts, 0.5W, 1 W, 2W, 4W and upwards to 35W; configurable to maximum power output for localized region

Available Bandwidth 410 MHz to 430 MHz and 430 MHz to 470 MHZ models; Configurable for both 12.5 kHz and 25 kHz bandwidth spacing

Modem Specifications Link Rate: 19,200 bps/4FSK, 9600 bps/4FSK, 19,200 bps/GMSK, 16,000 bps/GMSK, 9600 bps/GMSK, 8000 bps/GMSK, 4800 bps/GMSK Link Protocols: To be compatible with USAF legacy equipment

Physical Specifications

International Protection Rating IP67 Operating Temperature –30 °C to +60 °C (–22 °F +140 °F) Storage Temperature –30 °C to + 80 °C (–40 °F to +176 °F) Vibration MIL-STD-810F

Hi Over-the-Air Link Rate is necessary to fast transition of information packets. This becomes increasingly important as greater amounts of information from greater numbers of satellites needs to be transmitted

Modem Specifications are necessary to ensure radio compatibility with legacy GNSS equipment.

DATA CONTROLLER

Display VGA display, sunlight-readable color, backlight, touchscreen

Communication Ports USB Host/Client, 9-pin serial RS-232 Memory Minimum 256 MB RAM Storage Minimum 4 GB Expansion Memory card slot Available Options Integrated camera

Integrated GPS (SBAS enabled) Integrated compass For use Robotic Total Stations: Integrated 2.4 GHz frequency radio

Environmental specifications meets:

Operating Temperature –20 °C to 60 °C (–4 °F to 140 °F) Storage Temperature –30 °C to 70 °C (–22 °F to 158 °F) Humidity 90% International Protection Rating IP67 Drop 4ft onto plywood over concrete

MIL-STD-810G, Method 516.6, Procedure IV Vibration MIL-STD 810G, Method 514.6, Procedures I

OFFICE SOFTWARE

• Shall Integrate with Autodesk and ESRI

• Shall be approved for the use on the US Air Force network prior to award.

• Ability to export features to GIS file formats including shape files (.shp) and geodatabase XML files.

• Ability to import features in GIS geometry (point, line and polygon) formats with attribution

• Shall be capable of creating and managing feature libraries and matching attribute schema, layers and symbology from both GIS and CAD platforms

• Capable of viewing and selecting features directly from GIS shapefile (.shp) and AutoCAD (.dwg or .dxf) file formats

– Shall support background files including vector or raster

• Offline Software Licensing and Activation

• Survey office software

– Shall have the ability to store and work with data collected by various instruments in the same software file format (i.e. GNSS, Total Station, Scanner, Photogrammetry and Digital Level data in a single project file).

– Shall be capable of exporting to a Machine Control Format

– Shall be capable of creating DTM models, Site Designs, Road Designs and Airfield Designs

– Shall be capable of Direct Accessing Post Processing Services from Autonomously Collected Points

– Shall be capable of Directly Importing CORS Data via Internet Link

FIELD SOFTWARE

• Shall Integrate with Autodesk and ESRI

• Shall be approved for the use on the US Air Force network prior to award.

• Shall support background files including vector or raster

• Shall have capability for new data collection and update existing data sets

• Survey field software

– Survey field software shall have ability to store and work with data collected by various instruments in the same software file format (i.e. GNSS, Total Station, Scanner and Photogrammetry data in a single project file).

– Shall be capable of combined data collection utilizing both GNSS and total station instruments simultaneously in a single field session file

– Shall have dedicated Road Design Capabilities

– Shall collect data in a RAW Data Format in the field for processing in office software

– Shall support GNSS receiver automatic tilt monitoring and compensation

– Shall support the ability to continue to perform in a real time kinematic correction stream when loss of connection to the base station radio occurs

TRAINING

• Shall offer mission specific customized curriculum

• Online training

• Quick Guides

• Advanced courses

• Training shall be conducted by Manufacturer Certified Trainers. USAF Military training or training development experience is preferable, however, not required.

SUPPORT

• Online registration system for software and hardware

• Offline Software Activation

• Global Support (English speaking)

– 24 hour/6 day

– Web based, phone, email options