Specifications:
|
Architecture |
|
|
Channels |
12 simultaneous, all-in-view |
|
Frequency |
L1 1575.42 MHz |
|
Tracking |
C/A code & carrier |
|
Flash ROM |
256 k x 16 |
|
Static RAM |
64 k x 16 |
|
Processor Speed |
Hitachi SH-1 at 12.288 MHz |
|
Dynamics |
|
|
Altitude |
-1000 m to 18,000 m |
|
Velocity |
500 meters per second |
|
Acceleration |
4 g |
|
Jerk |
5 meters/second3 |
|
Acquisition |
|
|
Cold Start |
< 50 seconds (average) |
|
Warm Start |
< 40 seconds (current position, time, and almanac) |
|
Hot Start |
< 8 seconds (current position, time, almanac, and ephemeris) |
|
Snap Start |
3.5 seconds (average) |
|
Reacquisition |
100 milliseconds |
|
Accuracy |
|
|
Position (SA on) |
100 meters 2d RMS |
|
Position (SA off) |
< 25 meter SEP |
|
DGPS |
1 to 5 meters |
|
Timing, 1PPS (SA on) |
< 300 ns, dynamic |
|
Timing, 1PPS (SA off) |
< 75 ns, dynamic |
|
Receiver Sensitivity |
-143.5 dB-Hz |
|
Physical |
|
|
Dimensions |
41.91 x 71.88 x 8.76 mm (1.65 x 2.83 x 0.35 in) |
|
Weight |
19.84 g (0.7 oz) |
|
Electrical |
|
|
Operating Voltage (Sandpiper) |
5 ± 0.25 Vdc, 50 mVp-p (max) |
|
Power Consumption |
|
|
Sandpiper |
180 mA (continuous on) |
|
Antenna Bus |
20 mA (max) |
|
TricklePower |
down to 3 mA |
|
Correlator Portion |
40 mA |
|
Sleep Mode |
10 uA (RTC & SRAM) |
|
Environmental |
|
|
Operating Temperatures |
-40° to + 85° C |
|
Storage Temperatures |
-55° to + 125° C |
|
Operating Humidity |
5% to 95% R.H., Non-condensing, @ + 60° C |
|
Shock |
20 g (11 ms sawtooth) |
|
Vibration |
4 g |
|
|
|
|
Messages |
|
|
Formats |
NMEA 0183, SiRF binary, |
|
Baud Rates |
2400, 4800, 9600, 19200, 38400 |
|
Update Rates |
Once per second |
|
NMEA Message Rates |
Never, once or every 1 to 255 seconds |
|
NMEA (input) |
$PSRF commands: Set Serial Port, Navigation Information, Set DGPS Port, Query/Rate Control, LLA Navigation Init, Development Data On/Off |
|
NMEA (output) |
GGA, GLL, GSA, GSV, RMC, VTG |
|
SiRF binary (input) |
Initialize Data Source, Switch to NMEA Protocol, Set Almanac, Mode Control, DOP Mask Control, DGPS Control, Elevation Mask, Power Mask, Editing Residual, Steady-State Detection, Static Navigation, Clock Status, Set DGPS Serial Port, Almanac, Ephemeris, Set TricklePower Mode |
|
SiRF binary (output) |
Measured Navigation Data, Measured Tracking Data, Raw Tracking Data, SW Version, Clock Status, 50 BPS Subframe Data, Throughput, Command Acknowledgement, Visible SV List, Almanac Data, Ephemeris Data, Development Data |
|
Miscellaneous |
|
|
Discrete I/O |
4 general purpose, TTL levels |
|
DGPS |
Yes, on port B |
|
Y2K Compliant |
Yes |
|
GPS Week Rollover Compliant |
Yes |
|
On-board LNA |
14 dB gain |
|
Datums |
|
|
Standard |
WGS-84 |
|
User Definable |
1 |
|
User Selectable |
219 |