High Performance IMU Inertial Measurement Unit 8*7cm Size For Navigation Guidance

Introduction

LKF-F3X80 inertial measurement unit is an inertial product developed for navigation guidance, attitude measurement and control systems of small missiles and guided bombs. The angular velocity and linear acceleration of the carrier motion provide information for the attitude and navigation control of the carrier, and the measurement results are output through the RS422 serial port.

By reducing the outer diameter of fiber to 135μm,Thin PM fiber solution decreases extremely the size of fiber coils and delivers outstanding precision performance in fiber coils, which is applied for miniaturization of FOGs. And the coils are wound precisely through quadrupole symmetry method.

The LKF-F3X80 plays a key role in navigation and positioning due to its highly accurate rotational measurement capabilities. It is widely used in aircraft, satellites and drones to ensure they maintain accurate positioning and navigation in the sky. This is critical for air rescue, weather forecasting and the stability of communications satellites.

Fiber Optic Gyroscope	A	B	C
Bias Repeatability at Room Temperature (By times, by days) (º/h)	≤0.5	≤0.3	≤0.20
Bias stability at Constant Temperature (º/ h)	≤0.5	≤0.3	≤0.20
Scale Factor Repeatability at Room Temperature (ppm)	≤50	≤30	≤20
Scale Factor Asymmetry at Constant Temperature (ppm)	≤30	≤20	≤20
Scale Factor Nonlinearity at Constant Temperature (ppm)	≤30	≤20	≤20
Threshold (º/h)	≤0.5º/h
Angular Rate Range (º/s)	-500 to +500 º/s
Bandwidth (Hz)	100
Dimensions (mm)	Ф80*70
Weight (g)	780±20 (with accelerometer)
Operating Temperature (°C)	-40 to +65

 

Quartz Accelerometer
No.	Item	Technical Requirement
1	Range (g)	≥±40
2	Scale Factor Temperature Coefficient (ppm /°C)	≤100
3	Scale Factor Monthly Stability (ppm)	≤100
4	Bias (mg)	≤±7
5	Bias Temperature Coefficient (μg /°C)	≤100
6	Bias Monthly Stability (μg)	≤100
7	Second-order Nonlinear Coefficient (μg /g2)	≤20
8	Mounting angle (")	≤200
9	Outlook	No scratches, cracks, or corrosion
10	Isolate	≥20MΩ; (100V),25℃±5℃, humidity≤80%

 

Table 2 The electrical interface of the gyroscope uses J30-15ZK connector

LKF-F3X80-IMU/INS Output Definition
J30J-15ZK	Define	Note
5, 13	+24V	Inertia Combination Power Supply
6, 7	+24V (ground)
1	T3+	Serial Port
2	T3-
3	R3+
4	R3-
11	T2+	IMU Data Output Serial Port
12	T2-
14	T1+	Debugging Serial Ports
15	T1-
9	R1+
10	R1-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main Features

High Degree of Engineering, Highly Cost-Effective

Pure Solid-State Design with Strong Environmental Adaptability

Full Digital RS-422 Electrical Interface Output

 

Application

Navigation guidance 

Attitude measurement and control systems for small missiles and guided bombs

 

Fig. 1 Dimensions of the external structure