NM871B Integrated Navigation and Positioning Module

NM871B

TheNM871Bintegratednavigationandpositioningmoduleisacompacthigh-precisionpositioningmoduledevelopedbasedonthebasebandradiofrequencyintegratedchip"NEMO"independentlydesignedbyJinweiJicheng.ItsupportsthereceptionofsignalsfromallconstellationsandallfrequencypointsofGNSS,supportstraditionaldifferentialpositioningmodessuchasRTKandDGNSS,andsupportsPPPpositioningmode.Itcanprovidepositioningserviceswithcen..

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Product features

High-performance autonomous chip
Utilizing the lightweight and high-precision baseband radio frequency integrated "NEMO" chip independently developed by Jinweiji Electric Co., Ltd.
Support for receiving the full frequency band signals of Beidou
Supports BDS, GPS, GLONASS, and GALILEO full-system and full-frequency GNSS signals; supports 10Hz RTK positioning; supports positioning modes such as PPP and PPP-RTK
Built-in inertial navigation system, supporting integrated satellite-inertial positioning
GNSS + INS deep coupling and INS-assisted calculation, with faster calculation speed and higher availability
High compatibility
The standard size of 17mm × 22mm and the pin definition make it convenient for application integration.

Technical Index

performance index	Module model		NM871B
	Receiving satellite frequency point		BDS	B1I、B2I、B3I、B1C、B2a、B2b
			GPS	L1CA、L1C、L2C、L5
			GLONASS	L1、L2
			Galileo	E1、E5a、E5b
			QZSS	L1、L2
			SBAS（match）	L1
	Update rate		original data	10Hz(Pure guidance system)		5Hz(Start the integrated navigation system)
			RTK location	10Hz(Pure guidance system)		5Hz(Start the integrated navigation system)
			integrated navigation	-		100Hz
	Single-point positioning accuracy		plane	≤1.5m(1σ)
			elevation	≤3.0m(1σ)
	DGNSS accuracy		plane	≤0.3m+10ppm(1σ)
			elevation	≤0.6m+10ppm(1σ)
	RTK accuracy		plane	≤1cm+1ppm(1σ)
			elevation	≤2cm+1ppm(1σ)
	Comprehensive navigation calculation accuracy（1km or 2min）			-	2%×operating range
	Timing accuracy			≤20ns(1σ)
	Rate accuracy			≤0.05m/s (1σ)
	Cold start time			≤35s
	Warm-up time			≤5s
	Recapture time			≤1s
	RTK initialization time			≤5s(10km base line)
	RTK initialization reliability			≥99.9 % (10km base line)
	Support agreement			RTCM2.X RTCM3.X NMEA-0183 user-defined protocol
physical property	Size			17mm×22mm×2.8mm
	Power supply			3.0V~3.6V DC
environmental index	Humidity			95% No condensation
	Operating temperature			-40℃~+85℃
	Storage temperature		-55℃~+125℃
modi module interface	Functional interface	3×UART、1×I2C、1×PPS、1×SPI

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NM871B

NM871B Integrated Navigation and Positioning Module

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