Very high frequency omnidirectional beacon azimuth resolving method, device, equipment and medium

Abstract

The invention discloses a very high frequency omnidirectional beacon azimuth resolving method, device, equipment and medium. The method comprises the following steps: acquiring a carrier envelope signal obtained by demodulating a very high frequency omnidirectional beacon spatial radio frequency signal and a time zero point obtained by reference 30HZ detection; and constructing a Kalman filtering mathematical model for the carrier envelope signal, and carrying out azimuth calculation on the carrier envelope signal by adopting a very high frequency omnidirectional beacon azimuth calculation method based on extended Kalman filtering. The method is completely different from the traditional thought, the extended Kalman filtering is applied to the VOR azimuth solving problem, and the scheme is a brand-new scheme; the method does not need to separate a variable phase signal and a reference phase signal and perform phase comparison, directly establishes a unified mathematical model for a carrier envelope signal, combines the phase locking process and the filtering process together, automatically converges to a desired angle through an iterative solution process, and uses the excellent tracking filtering performance of Kalman filtering to achieve the purpose of phase comparison. And the precision of the azimuth angle is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of communication control, in particular to a VHF omnidirectional beacon azimuth calculation method, device, equipment and medium. Background technique [0002] The very high frequency omnidirectional range (VOR) system, also known as the VOR system, is widely used in civil aircraft and is one of the main navigation methods during the land cruise phase of the aircraft. It is the same as the flight management system on modern aircraft. Working together, the area navigation guidance of the aircraft can be completed. The VOR system consists of two parts, the ground transmitter and the airborne equipment. The airborne equipment receives and processes the signal emitted by the ground transmitter, and can obtain the magnetic azimuth of the aircraft. [0003] The basic working principle of VOR airborne equipment: the ground station transmits two signals of reference phase 30HZ and variable phase 30HZ, and t...

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is that the main problem of the existing VOR azimuth solution method is that the azimuth accuracy is relatively low, and the accuracy is generally within 3 degrees (95% probability). The farther away from the platform, the greater the positioning error, so the error level of 3 degrees makes VOR only applicable to occasions where the navigation accuracy is not high (for example, VOR cannot meet the accuracy requirements within the performance-based navigation specification RNP1)

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