An Adaptive Interference Source Location Flight Verification Method

Abstract

The invention discloses an adaptive interference source positioning flight verification method, the monitoring and positioning of all kinds of radio interference sources can be realized, and the radio safety of civil aviation is ensured. The basic principle of flight verification of radio interference positioning is that airborne radio detection equipment is used to obtain a direction of arrival wave of an interference source, combined with flight parameters of position, speed, flight attitude and height of an aircraft, the single station cross positioning principle is applied, an adaptive filtering method is used, and the position information of the interference source can be accurately obtained. The method comprises a step of establishing a state equation of verifying an aircraft interference detection system, a step of establishing a nonlinear measurement equation of verifying the aircraft interference detection system, a step of discretizing the system state equation and the measurement equation, and a step of using an adaptive interference source positioning algorithm to solve the discretized equations, and outputting the position of the interference source. According to the method, the adaptive interference source positioning algorithm is used, and the positioning precision of the positioning algorithm and the stability of a positioning process are improved.

Description

technical field [0001] The invention relates to an adaptive interference source positioning flight verification method, which is applied in the technical fields of aviation flight verification and radio detection technology. Background technique [0002] With the continuous increase of the total number of radio stations in my country, and the increasing number of civil aviation airports, routes, and flights, the incidents of electromagnetic interference on civil aviation radio frequencies are on the rise year by year. Radio interference poses a serious threat to the civil aviation communication system and air traffic control system, ranging from causing the aircraft to change its original course or delaying the flight to bring huge economic losses, and seriously threatening the safety of the aircraft and the majority of passengers. Regarding the problem of electromagnetic interference on civil aviation radio frequencies, it is necessary to strengthen the management of releva...

AI Technical Summary

Problems solved by technology

EKF is the most widely used in nonlinear systems. The nonlinear filtering problem is transformed into an approximate linearization problem through Taylor series expansion, but because the linearization ignores the highest item of the Taylor series, a truncation error is introduced; at the same time, the process noise covariance and The measurement noise covariance and the initial state are determined by pre-estimation. If the estimation is not accurate, it will lead to filter divergence.

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