T75R Fiber Optic Strapdown Inertial Navigation System

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Overview
The T75R fiber optic inertial navigation system uses a 75-type three-axis fiber optic gyroscope as its core inertial device to achieve high-precision measurement of carrier motion. Error suppression is achieved through modulation. It can form a combined navigation system with a satellite positioning system (GNSS) or DVL and odometer, and transmit real-time navigation information such as speed, position and attitude to the outside world through the communication port at a specified period.

Features
● High precision.
● Flexible navigation modes: Supports multiple modes such as pure inertial navigation, GPS combined navigation, odometer combined navigation, and DVL underwater combined navigation to adapt to different application scenarios.
● Communication protocol is configurable: The communication protocol and baud rate can be set according to user needs.
● Excellent environmental adaptability and resistance to strong impact and vibration.
● Rich and reliable interface configuration: Equipped with digital communication interfaces such as RS422 and RS232.
● It meets the data interaction needs of multiple devices.
● High reliability.

Physics/Electricals
● External dimensions: 157mm × 157mm × 143mm
● Weight: Less than 4.5kg
● Power supply: 17-36V DC power supply, nominal power supply voltage 28V
● Power consumption: Steady-state power consumption less than 25W
● External connector: J30JM-25ZKP

Environmental adaptability
● Operating temperature: -40 ℃ ~ +60 ℃
● Storage temperature: -55 ℃ ~ +80 ℃
● Vibration: 6.06g (RMS), 20Hz~2000Hz
● Impact: 30g, 6ms~8ms 

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Specifications

No.

Items

Parameter

1

Azimuth self-alignment accuracy

≤0.03 °sec(Φ) (Φ is the local latitude)

2

Horizontal attitude alignment accuracy

≤0.005 °​

3

Inertial navigation accuracy

≤ 1 nmile/ 5 h (alignment time 15 minutes)

3

Azimuth maintenance accuracy

≤0.02 °/h (pure inertia)

≤0.02 ° (integrated navigation)

4

Horizontal attitude maintenance accuracy

≤0.01 °​

5

Position accuracy

≤10m (GNSS combination)

≤0.1 % D (D is the range) (DVL underwater combination)

6

Speed accuracy

≤0.1m/s (GNSS combination)

≤ 1 m/s ( pure inertia )

No less than DVL speed accuracy (DVL combination)

8

Self-calibration

It has the function of self-calibrating inertial device error.

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