Vehicle positioning device based on laser gyroscope strapdown inertial measurement unit

Abstract

The invention, aiming to enhance a rapid maneuvering capability and an object targeting precision of a weapon system and satisfy requirements of a quick response, a high precision, a strong independence and a good reliability of the system on a vehicle positioning device, provides the vehicle positioning device based on a laser gyroscope strapdown inertial measurement unit. The vehicle positioning device includes: a laser strapdown inertial measurement unit in which a laser gyroscope is employed, an odometer assembly used for measuring a running speed and a running distance of a vehicle on ground, an elevation meter used for obtaining an altitude by measuring an atmosphere pressure of a level of the vehicle, a multimode satellite system which is compatible with single antenna and double antennas, and a display controlling apparatus assembly used for carrying out an intelligent match between positioning information of the vehicle positioning device and a road network electronic map. By means of advantages of being high in precision, stable in performance, wide in dynamic range, short in response time and high in reliability of the laser gyroscope, a positioning and orienting function which is high in precision, strong in independence and good in reliability is achieved through methods, such as a gyroscope demodulation technology, a multi-information fusion technology and the like, on the basis of a digital filter.

Description

technical field [0001] The invention belongs to the technical field of vehicle navigation and positioning, and relates to a vehicle positioning system; more specifically, it relates to a vehicle positioning device based on a laser gyro strapdown inertial group. Background technique [0002] Modern advanced land combat vehicles, such as self-propelled artillery, long-range rocket launchers, shooting command vehicles, missile launch vehicles, etc., are generally equipped with advanced navigation and positioning equipment, which is used to provide accurate geographical location during the driving process of the vehicle. In order to ensure and enhance the rapidity and accuracy of weapon system operations, positioning equipment is required to have the characteristics of rapid response, high precision, high reliability, and strong autonomy. [0003] In the late 1970s, the initial vehicle positioning system usually consisted of an odometer, a magnetic compass, a rate gyroscope and ...

AI Technical Summary

Problems solved by technology

[0003] In the late 1970s, the initial vehicle positioning system usually consisted of an odometer, a magnetic compass, a rate gyroscope and a microprocessor. The positioning accuracy of this vehicle positioning system was low, which limited the practicability of the vehicle positioning system.

However, the disadvantages of large volume, low device reliability, short practical life, long initial preparation time, and high cost restrict the application of these positioning devices.

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