SOW_-_Final.docx

Statement of Work/Specifications

NTIA000-19-00122

1.0 BACKGROUND

Over the last few years, ITS has been improving its geolocation ability, to include consistent, on-demand access to Global Positioning Satellite (GPS) position and timing information. GPS receivers of the type ITS uses are capable of receiving position correction information from other, outside sources, e.g. Trimble CenterPoint RTX, Satellite-Based Augmentation System (SBAS), and Real-Time Kinematics (RTK). SBAS and CenterPoint RTX are broadcast over the air, and are therefore receivable anywhere GPS signals are. However, the effectiveness of RTK signals are limited to a range within 30 km of the Continuously Operating Reference Station (CORS). At the ITS Boulder Labs, we have excellent access to correction sources via the UNAVCO Plate Boundary Observatory system of CORS. However, these CORS are not universally available in all of the locations that ITS conducts measurement campaigns. Without access to an RTK, the accuracy of position estimates is degraded from millimeter-level accuracy to up to a meter of position error.

2.0 OBJECTIVE

The objective of this Purchase Order is to procure a survey-grade Global Navigation Satellite System (GNSS) Solution that can deliver millimeter accuracy over a 450 MHz radio link to our vehicle-mounted Trimble BX-982 GNSS while conducting measurements in the field. The Contractor shall provide a Trimble Alloy GNSS Reference receiver, a Trimble Zephyr 3 Geodetic antenna, a tribrach with optical plummet, a tribrach adapter, and an instrument tripod.

(An example using Trimble’s Alloy GNSS reference receiver and associated options/upgrades is included below to illustrate how a company will address the functional requirements.)

3.0 FUNCTIONAL REQUIREMENTS OF THE GNSS REFERENCE RECEIVER, ASSOCIATED OPTIONS, AND ACCESSORIES

The Contractor shall meet the following minimum requirements and as supplemented in accordance with the attached Brand Name Justification:

POSITIONING PERFORMANCE

Differential Positioning

· Code differential GNSS positioning

· Horizontal ...................................................0.25 m + 1 ppm RMS

· Vertical ......................................................0.50 m + 1 ppm RMS

· SBAS differential positioning accuracy

· Horizontal ..........................................................0.50 m RMS

· Vertical ..............................................................0.85 m RMS Static GNSS Surveying

· High Accuracy Static

· Horizontal ..................................................3 mm + 0.1 ppm RMS

· Vertical ...................................................3.5 mm + 0.4 ppm RMS

· Static & Fast Static

· Horizontal ..................................................3 mm + 0.5 ppm RMS

· Vertical .....................................................5 mm + 0.5 ppm RMS Real Time Kinematic Surveying

· Single Baseline < 30kmHorizontal ....................................................8 mm + 1 ppm RMS

· Vertical ......................................................15 mm + 1 ppm RMS

· Networked RTK

· Horizontal ..................................................8 mm + 0.5 ppm RMS

· Vertical ....................................................15 mm + 0.5 ppm RMS

· Initialization time ..............................................typically <10 seconds

· Initialization reliability ...............................................typically >99.9%

SATELLITE TRACKING

· GPS: L1 C/A, L2E (L2P), L2C, L5

· Galileo: L1 CBOC, E5A, E5B & E5AltBOC, E6

· SBAS: L1 C/A (EGNOS/MSAS), L1 C/A and L5 (WAAS)

INPUT/OUTPUT FORMATS

· Correction Formats:

· CMR, CMR+, CMRx, GAGAN, RTX, RTCM 2.x, RTCM 3.x, SDCM

· Observables:

· RT17, RT27, BINEX, RTCM 3.x

· Position/Status I/O:

· NMEA-0183 v2.30, GSOF

· Up to 100 Hz Output

· 10 MHz External Frequency Input

· Normal input level 0 to +13 dBm

· Maximum input level +17 dBm, ±35 V DC

· Input impedance 50 Ohms @ 10 MHz; DC blocked

· 1 PPS Output

DATA LOGGING

· File Formats: T02, T04, BINEX, RINEX v2.x/3.0x,

· Data Retrieval and transfer: HTTP, FTP Server, USB

ELECTRICAL

· 9.5 to 28 V DC input on 2 Lemo ports–

· User-configurable power-on voltage

· User-configurable power-down voltage•

· Integrated dual hot-swappable smart batteries (7.4 V, 7800 mA-hr, Li-Ion batteries) with up to 15 hours of continuous operation

ENVIRONMENT

· Operating Temperature: –40 °C to +65 °C (–40 °F to +149 F)

· Storage temperature: -40 °C to +80 °C (–40 °F to +176 F)

· Humidity .........................................................100% condensing

· Shock

· Operating: 40 g per MIL-STD-810G Table 5.16.6-VII

· Non-Operating: 75 g per MIL-STD-810G Table 5.16.6-VII, Designed to survive 1m bench drop

· Vibration

· Operating: MIL-STD-810G Fig. 5.14.6C-1 Category 4

· Ingress protection ..................................IP68 Certified per IEC-60529 -waterproof/dustproof (1m submersion for 1 hr)

REPRESENTATIVE TRIMBLE PRODUCT:

Base Model:

· Trimble Alloy GNSS Reference Station Receiver w/ Zephyr 3 Geodetic Antenna Accessories:

· Seco Tri-Max Standard Dual Clamp Instrument Tripod or equivalent

· Seco Tribrach with Optical Plummet or equivalent

· Seco Rotating Tribrach Adapter or equivalent

· Trimble Dual (second) battery upgrade or equivalent

· Trimble Field Battery Charger Kit or equivalent

Warranty: Manufacturer’s standard warranties

4.0 PERIOD OF PERFORMANCE

The period of performance shall be 6 weeks ARO.

5.0 DELIVERY ADDRESS/PLACE OF ACCEPTANCE

DOC/NTIA/ITS

325 Broadway Boulder, CO 80305

6.0 TECHNICAL POINTS OF CONTACT

PRIMARY TECHNICAL POINT OF CONTACT:

Anna Paulson 303-497-7891 APaulson@ntia.doc.gov

ALTERNATE TECHNICAL POINT OF CONTACT:

Bob Johnk 303-497-3737 RJohnk@ntia.doc.gov

7.0 INVOICES

Please submit invoices to invoice@nist.gov