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:
Features:
- 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
ATMEL Schematic:
ATMEL Code:
For ATMEL code CLICK HERE
ARM Schematic:
ARM Code:
For ARM code CLICK HERE
PIC Schematic:
PIC Code:
For PIC code CLICK HERE
