High Performance FOG INS

Azimuth accuracy ≤ 0.1° secψ(1σ);
Attitude accuracy ≤ 0.02°(1σ);
Azimuth holding accuracy ≤0.05°sec lat(1σ)

Product Details

ER-FINS-98 High Performance FOG INS (Replace PHINS )


ER-FINS-98 FOG inertial navigation system(Substitute of PHINS) uses triaxial fiber optic gyro to sense angular motion and output digital signal in proportion to the carrier movement angular rate; uses three orthogonal collocation of quartz accelerometer to sense carrier linear acceleration and output proportionable current signal ,which is switched to frequency signal though I-F conversion circuit, then input to navigation computer. Computer finishes data receipt of gyro, accelerometer and external GPS , system compensation error calculation, navigation solution and externally sending real-time speed, position, attitude and navigation information affixed the cycle through the monitoring port .

The initial alignment of ER-FINS-98 is divided into two modes: static alignment and double position alignment. The position accuracy of the two position alignment is higher than that of the static alignment.

ER-FINS-98 has high precision and best stability and showed excellent performance in comparison test with PHINS related INS products.


Pure Inertial Mode

Azimuth accuracy

≤ 0.1°secψ(1σ)

Attitude accuracy

≤ 0.02°(1σ)

Azimuth holding accuracy

0.05° /h

Attitude holding accuracy

0.03° /h

Positioning accuracy(50%CEP)

≤ 2nm/h (10min Static   alignment )

Horizontal velocity   precision(RMS)

≤ 2m/s (10min Static   alignment )

Positioning accuracy(50%CEP)

≤ 1nm/h(Two position alignment,

Alignment time is     less than 30min)

Horizontal velocity   precision(RMS)   

≤ 1m/s(Two position alignment,

Alignment time is less than   30min)

GNSS Assisted Navigation Mode(External receiver)

Azimuth accuracy

≤ 0.1°secψ(1σ)

Horizontal attitude accuracy

≤ 0.02°(1σ)

Azimuth holding accuracy


Horizontal attitude holding   accuracy

≤ 0.01°(1σ)

Positioning accuracy

≤ 5m(1σ)

Speed accuracy

≤ 0.1m/s(1σ)

Power and environment

Data measurement frequency

Maximum 100Hz

Power Supply

23~31V DC Power Supply,

Nominal Supply Voltage27V


Normal temperature steady-state power 

consumption   is less than 17W,  

High and low temperature steady-state   

power consumption is less than 20W, 

Start transient power consumption

is less than 50W

Working Temp

-40° C~+60°C

Storage Temp

-45° C~+80° C

Installment Dimension




Fiber Optic Gyroscope

Time to Prepare

≤ 15s

Bias Stability(100s)

≤ 0.02 ° /h(1σ)

Bias repeatability

≤ 0.02 ° /h(1σ)

Random Walk Coefficient

≤ 0.005° / √ Hz

Scale Factor Nonlinearity

≤ 50ppm(1σ)

Scale Factor Repeatability

≤ 50ppm(1σ)

Gyro Measurement Range

≥ ±300° /s

Quartz Accelerometer

Measurement Range


The Threshold Value

≤ 5×10-6g

Scale Factor Repeatability

≤ 3.5×10-5(1σ)

Scale Factor Temperature   Coefficient     

≤ 6×10-5/° C(-40° C~+60° C)

The Second Order Nonlinear   Coefficient        

≤ 3×10-5g/g2


≤ 6×10-3g

Bias Repeatability

≤ 2.5×10-5g (1σ)

Bias Temp Coefficient

≤ 2.5×10-5g/° C(-40° C ~ +60° C)

Band width

≥ 800Hz



1. What is your quotation condition?

If you have DHL or Fedex account ,we can quote EXW price ,otherwise CIF or FOB price.

2.Do you have any discount when procurement? 

We will quote sample price at first and we will quote volume price if you need more quantity.

3.How long is the delivery time?

For sensors,parts,modules : in stock-one week;no stock-2-4weeks; For systems,generally ,8-12 weeks.

4.How to deal with the quality problems?

If confirmation of product quality problem we can replace it freely for customer in the shortest period.

If interested, pls contact us : info@ericcointernational.com