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HP-GPS-L4

The HP-GPS-L4 is a complete GPS backpack system for creating and updating GIS level maps to 30-60cm accuracy.

The HP-GPS-L4 package includes CMT's PC-GPS software for comprehensive GPS project management and mapping, PC-GPS provides functions for Mapping, Mission Planning, Batch Differential Correction, Static Point "Spread" analysis and Job Editing.

The software also supports GIS layering, raster images (i.e. DOQs, DRGs, aerial photographs, satellite imagery), multimedia objects (OLE 2.0) and Microsoft® ODBC.

THE SYSTEM INCLUDES

  • 12-channel GPS receiver (C/A and Carrier)
  • Multipath rejection antenna
  • 15m antenna cable
  • (2) NiMH rechargeable batteries and recharger
  • (2) power cables, single battery and parallel (2 battery)
  • 2m coiled data cable
  • Aluminum framed nylon backpack w/antenna pole
  • PC5L-GPS hand-held computer with MS-DOS® 5.0 and CMT-FIELD®
  • PC-GPS CMT's MS Windows® based mapping software
     

COMPATIBLE WITH COAST GUARD BEASON RECEIVER

Obtain real-time differential correction with CMT's Coast Guard Beacon Receiver package.

HP-GPS-L4 FEATURES 30-60cm ACCURACY

  • Using C/A code, the HP-GPS-L4 can attain 30-60 centimeter accuracy with real-time RF differential correction or post-processing by uploading and processing your C/A code data in PC-GPS.
  • Using Carrier Phase, the HP-GPS-L4 can attain as good as 5 cm accuracy through post-processing with the Carrier Phase differential correction module provided with PC-GPS.
     

FULLY INTEGRATED FIELD SOFTWARE

  • HP-GPS-L4 features CMT-FIELD®, our fully integrated data collection software. Its intuitive, point-and-shoot interface will get you up and running quickly, whether you are a newcomer to the field of GPS or an experienced GPS professional.
  • CMT-FIELD's powerful database functions allow you to tie the detailed data you need to each GPS point, line, or area - saving you time in the field and increasing your data analysis efficiency in the office.
     

POWERFUL, MS WINDOWS® BASED PROCESSING SOFTWARE

PC-GPS provides professional quality map building software in a familiar Window environment and easy export of your data to your GIS application software. PC-GPS exports:

  • ESRI Shapefiles®
  • ArcInfo®
  • AutoCAD® DXF
  • ASCII

SPECIFICATIONS
Accuracy
Real-time Differential (DGPS)
DGPS (RMS) 30 cm
DGPS (typical) 30-60 cm
Post-processing
L1 Carrier phase post-processing
Static (RMS) 1 cm + 1 ppm
Static (typical) 1 cm + 1 ppm
L1 C/A Code Post-processing
Static (RMS) 30 cm
Static (typical) 25-50 cm
Time to first fix 60 sec. typical, 40 sec. with current ephemeris
Sensitivity -143 dBm castas threshold
Dynamics 3G
Velocity (RMS) .05 m/s
Maximum velocity 460 m/sec.
Maximum altitude 18 000 m

FEATURES

  • 12-channel L1 frequency
  • Extremely stable pseudorange code & phase mesurements
  • Full wavelength carrier phase on L1
  • Carrier-phase smoothing
  • Up to 2 Hz position update rate
  • Up to 10 Hz Code & phase measurements
  • RTCM-104 Ver. 2.0 input
  • NMEA 0183 output
  • 1 PPS timing signal

PHYSICAL

  • Operating temperature: -20°C to 50°C
  • Power consumption: 6 Watts
  • Input voltage: 10-32 VDC
  • Humidity: 95% non-condensing

DATA COLLECTOR

  • Waterproof (submersible)
  • Operating temperature: -40°C to 54°C
  • 4MB RAM standard (8MB optional)
  • 16 line x 25 character backlit display
  • Collect Points, Lines and Areas
  • Feature/Attribute/Value GIS structure
  • Traversing - Keyboard data entry to allow you to continue mapping when GPS is obstructed
  • Offset function to map hard-to-reach locations
  • Nested point function for tagging points while you are mapping a Line or Area Feature
  • Averaging function to optimize accuracy while recording static points
  • LLA/UTM/SPC plus user-defined coordinates
  • Supports 50 datums plus user-defined datums
  • Provides area calculation in the field
  • Interfaces to laser rangefingers, barcode readers and various NMEA devices
  • Two 9-pin RS-232 serial ports, PC/AT pinout

 

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