Four-beam Doppler velocity measurement method for carrier vehicle

Abstract

The invention provides a four-beam Doppler velocity measurement method for a carrier vehicle. The speed of a vehicle body is measured by using a four-beam Doppler velocity measurement technology. TheDoppler velocity measurement technology has the advantages of high precision, fast dynamic response, a wide measurement range, non-contact measurement and the like, is suitable for various measured objects, and can also be used for carrying out non-contact measurement on long-distance objects. A four-beam configuration scheme is adopted, accurate three-dimensional speed information can be providedfor the vehicle body, redundant structure design is added, the reliability of the system is improved, multiple demodulation calculation methods are achieved based on a three-beam model, speed correction is conducted on a single three-beam system, and the speed measurement precision of the system is improved.

Description

technical field [0001] The invention relates to the technical field of carrier-type speed measurement, and more specifically relates to a four-beam Doppler speed measurement method for carrier vehicles. Background technique [0002] With the increase of the number of motor vehicles, more and more attention has been paid to the measurement method of optimizing vehicle speed. At present, the speed parameter in the vehicle inertial navigation system is usually provided by the accelerometer or the global positioning system (GPS). [0003] However, these two speed measurement methods have obvious defects: the current accelerometers are based on the principle of measuring specific force, which measures the apparent acceleration of the moving body, rather than the absolute acceleration. The absolute acceleration of the moving body can be obtained only by the acceleration of the moving body, and there are many error items in the measurement, which need to be corrected through compl...

AI Technical Summary

Problems solved by technology

[0003] However, these two speed measurement methods have obvious defects: the current accelerometers are based on the principle of measuring specific force, which measures the apparent acceleration of the moving body, rather than the absolute acceleration. The absolute acceleration of the moving body can be obtained only by the acceleration of the moving body, and there are many error items in the measurement, which need to be corrected through complex calculations; the Global Positioning System (GPS) is the second-generation satellite navigation system developed by the US Department of Defense, which belongs to non-autonomous system, which cannot be equipped with combat weapons of the troops

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