Method and system for estimating reception amplitude of radio detection based on normal matching

Abstract

The invention discloses a method and system for estimating the receiving amplitude of radio detection based on normal matching. The method includes: collecting the amplitude values ​​of several real signals of a single channel; and performing probability distribution according to the several real signal amplitude values Statistically draw the probability distribution curve, and draw the statistical Q-Q diagram of the amplitude value of the real signal of the single channel; judge whether the statistical Q-Q diagram satisfies the normal distribution law, and when the normal distribution law is satisfied, fit the statistical Q-Q diagram The slope and intercept of the Q graph, the intercept is the mean value, and the slope is the mean square error; under the condition of satisfying the minimum variance criterion of linear constraints, the confidence interval of the probability distribution curve corresponding to the statistical Q‑Q graph is adaptively scaled to quickly converge Gets the mean of the magnitude values. The present invention reduces the filtering error and at the same time greatly improves the stability of the processing result and improves the ranging accuracy.

Description

technical field [0001] The invention relates to the field of radio detection, in particular to a method and system for estimating the receiving range of radio detection based on normal matching. Background technique [0002] With the rapid development of radio detection technology, a single direction-finding technology no longer meets the needs of radio detection in wartime. Passive positioning technology has become a research hotspot in radio detection technology, and radio detection and ranging technology has become the key to positioning. [0003] Traditional radio detection usually uses the amplitude ratio method or the interferometric method for direction finding. In the real scene, the amplitude ratio direction finding technology has higher requirements for the consistency of multi-channel antennas, and the interferometric direction finding technology has higher requirements for the cross baseline length and multi-channel phase synchronization. Therefore, in terms of d...

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