Radio frequency channel real-time calibration method and secondary radar

Abstract

The invention discloses a radio frequency channel real-time calibration method and a secondary radar. The method comprises the steps that the main unit of the secondary radar controls a calibration source to transmit a first calibration signal to a receiver of the secondary radar, wherein the frequency range of the first calibration signal is matched with the working band of the secondary radar; the receiver obtains a standard parameter value of a standard channel of N receiving channels and (N-1) first parameter values of (N-1) receiving channels, except the standard channel, of the receiver based on the first calibration signal, wherein N is an integer which is greater than or equal to 2; the main unit adjusts the (N-1) actual first parameter values of the (N-1) receiving channels based on the (N-1) first parameter values, and obtains (N-1) adjusted actual first parameter values which are consistent with the standard parameter value.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a real-time calibration method of a radio frequency channel and a secondary radar. Background technique [0002] With the continuous development of science and technology, radar technology has also been greatly improved. With the continuous combination of computer technology and radar technology, modern radar systems have gradually become fully automated, and primary and secondary radars have emerged as the times require. [0003] Among the technical indicators of the radar system, the angle measurement accuracy is a relatively key indicator, and the accuracy of its accuracy measurement directly affects the performance of the entire radar system, and an important factor affecting the angle measurement accuracy of the radar system is the radar system. Changes in magnitude and phase of the receive channel. Especially for radar systems working in a wide frequency band, it is di...

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Problems solved by technology

[0006] The embodiment of the present application provides a real-time radio frequency channel calibration method and secondary radar, which is used to solve the technical problem that the electronic equipment in the prior art cannot adjust the consistency of the radio frequency channel amplitude and phase in real time according to the actual working conditions of the radar system , to achieve the technical effect of providing a method for real-time calibration of the wideband secondary radar radio frequency channel

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