LR9551

CSR-StarV™ low power ROM chip
UART \ USB Interface

Performance

GPS, GLONASS, Galileo, BDS and SBAS reception for high GNSS availability and accuracy
High sensitivity navigation engine (PVT) tracks as low as
- GPS : -165 dBm
- GLONASS : -161 dBm
52 track verification channels
SBAS (WAAS, EGNOS, QZSS, MSAS, GAGAN)
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

Hardware and Software

Based on the high performance features of the SiRFstarV™ low power single core logic.
Adaptive micropower controller
Only 50 to 500μA maintains hot start capability (core logic)
< 10mW required for TricklePower™ mode
RoHS compliant (lead-free)
Advanced navigation features
External interrupt input for context change detection

Advantages

Built-in LNA.
Built-in internal ROM and based on Firmware 5.5.X
It can remove in-band jammer up to 80db-Hz and track up to 8CW jammers, so the GPS-Mouse can prevent GPS signal interference when design-in the electrical device with noisy electrical signal interferences such as laptop, mobile phone, DSC, etc.
Maintain tracking sensitivity as low as GPS @ -165dBm, GLONASS @ -161dBm, even without network assistance. (SiRFstar III has only -159dBm sensitivity)
Support SiRFaware™ technology
Support adaptive“Micro Power Controller”power management mode.
< 10mW TricklePower™, so user can leave power on all day instead of power off.
Suitable for battery drive devices that need lower power consumption application
Cost saving through elimination of RF and board to board digital connectors
Flexible and cost effective hardware design for different applications
Embed CGEE (Client Generated Extended Ephemeris) that can capture ephemeris data from satellites locally and predicts ephemeris up to 3 days. So if the GPS-Mouse was off within 3 days, it could complete positioning process with limited time just like hot start.

Connector and Interface

Technical specification
Feature	Content	Description
Chipset	GSD5e/ROM Base	SiRFstarV™ low power single chipset
General	Frequency GPS	L1, 1575.42 MHz
	Frequency GLONASS	L1,1602~1615MHz
	C/A code	1.023 MHz chip rate
	Channels	52
	Sensitivity GPS	-165dB
	Sensitivity GLONASS	-161dB
Accuracy	Position	< 2.5 meters
	Velocity	0.01 meters/second
	Time	1 uS synchronized to GPS time
Datum	Default	WGS-84
Datum	Other	selectable for other Datum
TTFF (@ -130dBm)	Reacquisition	0.1 sec., average
	Snap start	1 sec., average
	Hot start	< 2 sec.
	Warm start	< 20 sec
	Cold start	< 30 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	5 VDC input
	Power Consumption	Average: 60mA (Tracking Mode)
	Backup Power (VSTBY)	3.3V DC battery input
Serial Port	Electrical interface Protocol messages	Default RS232 / UART USB NMEA-0183@9600bps

Environmental Specification
Items	Description
Operating temperature range	-20 deg. C to +60 deg. C
Storage temperature range	-40 deg. C to +60 deg. C
Humidity	Up to 95% non-condensing or a wet
Humidity	Bulb temperature of +35 deg. C

LR9551
OS	語系	版本	描述
驅動程式
(32bit, 64bit)	English	Null ( 2016/9/19 )	Silicon Labs CP210x device-USB 檔案大小 : [ 3805 KB ]