High Precision Mems Integrated Navigation System

Cost-effective MEMS Integrated Navigation System

ER-GNSS/MINS-03:
1. High reliability and high precision MEMS gyroscope and MEMS accelerometer;
2. Built-in full-band full-system dual-antenna positioning and orientation GNSS module;
3. Precision aluminum alloy shell, can be widely used in land, aviation, navigation.

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Introduction

Cost-effective MEMS Integrated Navigation System

Introduction
ER-GNSS/MINS-03 is a cost-effective integrated navigation system that deeply integrates GNSS and INS. With high performance and high cost-effectiveness as the core design concept, it adopts tactical-grade MEMS inertial devices to obtain high-precision integrated navigation information while keeping the cost under control.

Equipped with integrated navigation fusion algorithm, it can provide continuous, accurate and reliable positioning, attitude and speed information under complex GNSS conditions. The heading accuracy can reach 0.05° (post-processing accuracy 0.01°), and the output attitude accuracy is 0.02° (post-processing 0.01°).

When the GNSS signal is lost or interfered with (entering a tunnel, urban canyon, or being interfered with by electromagnetic interference), the INS can maintain high-precision position, attitude (accuracy 0.01°), and heading (accuracy 0.02°) outputs for a short period of time until the GNSS signal is restored.

Equipped with tactical-grade high-precision and high-reliability MEMS gyroscopes (bias instability <0.3°/h) and high-precision MEMS accelerometers (bias instability <5ug), it can maintain excellent sensor performance while reducing costs.

It integrates a dual-antenna full-system full-frequency positioning and directional satellite module to perform RTK positioning and dual-antenna directional solution, single-antenna positioning and speed measurement, and dual-antenna rapid orientation. The satellite receiver has built-in anti-interference, and can still provide accurate and reliable satellite positioning in complex electromagnetic environments.

It has a variety of communication interfaces and provides standardized user communication protocols to meet aviation, land and other applications.

Feature
1.The system can provide accurate integrated navigation information, with attitude up to 0.02°, post-processing 0.01°, heading 0.05°, and post-processing 0.01°.
2.In the environment where the satellite signal is lost, maintain 30s of high-precision navigation, attitude (accuracy 0.01°), heading (accuracy 0.02°).

3.High reliability and high precision MEMS gyroscope (bias instability <0.3°/h) and high precision MEMS accelerometer (bias instability <5ug).
4.The working temperature is -40℃~+80℃, and the temperature compensation of the gyroscope and accelerometer is carried out in the working temperature range, which has better bias performance.
5.Built-in full-band full-system dual-antenna positioning and orientation GNSS module, supporting single-antenna high-precision positioning and velocity measurement, supporting dual-antenna fast orientation function.
6.The satellite receiver has built-in anti-interference and can provide accurate and reliable satellite positioning even in complex electromagnetic environments.
7.Variety of data interface, more easy to install and use, support RS422/RS232 and CAN
8.Precision aluminum alloy shell, high reliability, can be widely used in land, aviation.

Application areas
UAV, flight recorders, intelligent unmanned vehicles, roadbed positioning and orientation,
waterway detection, ROV/autonomous underwater vehicles (AUV) navigation.

Specifications

1.System parameter

ER-GNSS/MINS-03
Roll & Pitch Accuracy	0.02°
	0.01°(Post Processing)
Heading	0.05° Dual Antenna GNSS (baseline 2m)
	0.01° (Post Processing)
Speed accuracy	0.03m/s
RTK 30 sec outage	Roll&Pitch	Heading
	0.01°	0.02°
	Position(X/Y)	Altitude(Z)
	0.5m	0.25m
RTK 60 sec outage	Roll&Pitch	Heading
	0.02°	0.03°
	Position(X/Y)	Altitude(Z)
	1.5m	1.0m
Alignment Time	3min (Dual Antenna GNSS)

2.Sensor parameter

Gyro Performance
Item	Parameter	Unit
Range	±400	deg/s
Bandwidth (-3dB)	250	Hz
Scale Factor at 25℃	16000	LSB/deg/s
Scale Factor Repeatability (1σ)	<50	ppm
Scale Factor VS Temperature (1σ)	±300	ppm
Scale Factor Non-Linearity (1σ)	<300	ppm
Bias Instability	<0.3	deg/hr
Bias stability (1σ 10s)	<3	deg/hr
Bias repeatability (1σ)	<3	deg/hr
Angular Random Walk	<0.125	°/ √h
Noise Peak to Peak	±0.2	deg/s

Accelerometer Performance
Item	Parameter	Unit
Range	±10	g
Bandwidth	100	Hz
Bias stability (1σ 10s)	<50	ug
Bias stability (Allen)	<10	ug
Bias Month repeatability	100	mg
Factor Scale non-linearity	<500	ppm
Factor Scale Month Repeatability	<100	ppm
Factor Scale Temp Coefficient	10	ppm/℃
Class II Non-linearity Coefficient	<100	ug/g2
Scale Factor	800000	LSB/g

GNSS
Supported Navigation System	BDS/GPS/GLONASS/Galileo/QZSS
Main ANT Frequency	BDS:B1L, B2L, B3L GPS:L1C/A, L2P(Y)/L2C, L5 GLONASS: L1, L2 Galileo: E1, E5a, E5b QZSS: L1, L2, L5
Slave ANT Frequency	BDS:B1L, B2L, B3L GPS:L1C/A, L2C GLONASS: L1, L2 Galileo: E1, E5b QZSS: L1, L2
Position Accuracy (RMS)	Single point positioning	Horizontal		1.5m
	Single point positioning	Altitude		2.5m
	DGPS	Horizontal		0.4m+1ppm
	DGPS	Altitude		0.8m+1ppm
	RTK	Horizontal		0.8cm+1ppm
	RTK	Altitude		1.5cm+1ppm
Accuracy of observation (RMS)
	BDS	GPS	GLONASS	Galileo
B1I/L1 C/A/G1/E1 pseudo-range	10cm	10cm	10cm	10cm
B1I/L1 C/A/G1/E1 Carrier Phase	1mm	1mm	1mm	1mm
B3I/L2P(Y)/L2C/G2 pseudo-range	10cm	10cm	10cm	10cm
B3I/L2P(Y)/L2C/G2 Carrier Phase	1mm	1mm	1mm	1mm
B2I/L5/E5a/E5b pseudo-range	10cm	10cm	10cm	10cm
B2I/L5/E5a/E5b Carrier Phase	1mm	1mm	1mm	1mm
Time accuracy (RMS)	20ns
Speed accuracy (RMS)	0.03m/s
First positioning time	<30s
Initialization time	<5s
Data update rate	<20Hz

Power ＆ Interface
Supply Voltage	6~12V
Supply Consumption	5W
Interface	1Way-RS422 or 1Way-RS232 and 1Way-CAN and 2Way-TTL(NMEA out and RTCM in)
Environment
Operate Temp	-40℃~+80℃
Storage Temp	-55℃~+95℃
Dimension & Weight
Weight	<300g
Size	65mm70mm45.5mm