GPS-RECEIVER JP7-T
VERSION 1.02
6.5 Technical
specifications
6.5.1 Electrical
Characteristics
6.5.1.1 General
Frequency
L1, 1575.42 MHz
C/A code
1.023 MHz chip rate
Channels 12
6.5.1.2 Accuracy
Position
10 meters CEP without SA
Velocity
0.1 meters/second, without SA
Time
1 microsecond synchronized to GPS
time
6.5.1.3 DGPS Accuracy
Position
1 to 5 meters, typical
Velocity
0.05 meters/second, typical
6.5.1.4 Datum
WGS-84
6.5.1.5 Time to First Position
*
Hot start
< 4 sec., average
Warm start
< 35 sec., average
Cold start
< 45 sec., average
*
The values listed above are available by using the SiRFXTrac2 firmware, only.
6.5.1.6 Sensitivity
*
Tracking 16
dBHz
Hot Start
23 dBHz
Warm Start
28 dBHz
Cold Start
32 dBHz
*
The sensitivity value is specified at the correlator. On a JP7-T Evaluation Receiver
using SiRFXTrac2 firmware with the supplied antenna, 32 dBHz is equivalent to -
142 dBm or -172 dBW. Other board and antenna characteristics will vary.
6.5.1.7 Acquisition Rate
Snap start
< 3 sec., average
Hot start
< 8 sec., average
Warm start
< 38 sec., average
Cold start
< 45 sec., average
This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission.
Page 22
