Features:
- SiRF StarV ultra low power chipset
- GPS, GLONASS, Galileo and SBAS reception for high GNSS availability and accuracy
- Compact module size for easy integration : 15 x 14 x 2.8 mm
- Fully utilized SS5 upgrade features
The Ct-G551 GPS module is a high sensitivity, low power, Surface Mount Device (SMD) that fully utilized SiRFstarV upgraded features. This 48-channel Global Positioning System (GPS) and Global Navigation Satellite System (GLONASS) receiver is designed for a wide range of OEM applications and is based on the GPS pabilities of the SiRFstarV CSRG05e ROM chipset, Serf’s newest chipset technology. The Ct-G551 provides flexible bus interfaces (UART).
Performance
High Performance Solution :
- GPS, GLONASS, Galileo and SBAS reception for high GNSS availability and accuracy
- High sensitivity navigation engine (PVT) tracks as low as GPS:-164dBm, GLONASS:-161dBm
- 48 track verification channels
- SBAS (WAAS or EGNOS,MSAS)
- Active Jammer Remover:
- Removes in-band jammers up to 80 dB-Hz
- Tracks up to 8 CW jammers
- Multimode A-GPS (Autonomous, MS-Based, and MS-Assisted) - Need operator support
- Embedded CGEE / SGEE (With back-end server support) speed up TTFF a lot and makes cold start time to be around 20+ seconds.
- SiRFGeoRecovTM Reverse EE makes positioning process being done under power saving mode.
- Reacquisition Time: 0.1 second
- RF Metal Shield for best performance in noisy environments
| Feature | Item | Description |
| Chipset | GSD5e/ROM base | SiRF starV low power single chipset |
| General | Frequency GPS | L1, 1575.42 MHz |
| Frequency GLONASS | L1, 1602~1615 MHz | |
| C/A code | 1.023 MHz chip rate | |
| Channels | 48 | |
| Sensitivity GPS | -164 dB | |
| Sensitivity GLONASS | -161 dB | |
| Accuracy | Position | <2.5 meters |
| Velocity | 0.01 meters/second | |
| Time | 1 microsecond synchronized to GPS time | |
| Datum | Default | WGS-84 |
| Other | selectable for other Datum | |
| Time to First Fix(TTFF) (Open Sky & Stationary Requirements) | Reacquisition | 0.1 sec., average |
| Snap start | 1 sec., average | |
| Hot start | 1~2 sec. | |
| Warm start | 9~15 sec. | |
| Cold start | 25~35 sec. | |
| 　Dynamic Conditions | Altitude | 18,000 meters (60,000 feet) max. |
| Velocity | 515 meters/second (1000 knots) max. | |
| Acceleration | 4g, max. | |
| Jerk | 20 meters/second3, max. | |
| 　Power | Main power input | 1.71 ~ 1.89 VDC input |
| Power consumption | Average 60mA (Tracking Mode) | |
| Backup Power(V_RTC) | 1.71 ~ 1.89 VDC input | |
| Serial Port | Electrical interface | Default UART |
| Protocol messages | NMEA-0183@4800 bps |
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