Overview
Global
Positioning System (GPS) satellites broadcast signals from space that
GPS receivers, use to provide three-dimensional location (latitude,
longitude, and altitude) plus precise time. GPS receivers provides
reliable positioning, navigation, and timing services to worldwide users
on a continuous basis in all weather, day and night, anywhere on or
near the Earth.
GPS Modem GR87
- Build on high performance SiRF Star III chipset
- Average Cold Start time and under 45 seconds
- Low Power Consumption
- 200,000 effective correlators for fast TTFF and high sensitivity acquisitions
- On Chip 1Mb SRAM
- Dual TTL level serial ports with one for GPS receiver command message interface, another one for RTCM-104 DGPS input.
- Compact Board Size 1" x 1" x 0.27"(25.4 x 25.4 x 7 mm) for easy integration into hand-held device
- Reacquisition Time 0.1 seconds
- Support Standard NMEA-0183 and SiRF Binary protocol
- Support Accurate 1PPS Output Signal Aligned with GPS Timing
- Multi-Path Mitigation Hardware
- On-Board RTCM SC-104 DGPS and WAAS / EGNOS Demodulator
Documents and codes:
ARM Schematic
For ARM Code CLICK Here: ARM COde
ATMEL Schematic
FOR ATMEL Code CLICK HERE
PIC Schematic:
For PIC Code CLICK HERE
For More Details Click Here
