Correction method for self-adaptive adjustment of delay inequality of antenna array

Abstract

The invention provides a correction method for self-adaptive adjustment of delay inequality of an antenna array. Signals of a plurality of antennae are received by an antenna array signal processing terminal. Received signals of one antenna frequency band selection branch are used as a standard. Relevant integral accumulation is performed to the upper side and lower side bandwidths of receiving signals of other antenna frequency band selection branches according to identical upper side and lower side bandwidths of the receiving signal standards to calculate the delay inequality between other antennae and the standard antenna. Phase calculation and compensation unit and amplitude calculation and compensation unit are used to finish synthesis and delay calculation of channel signals. An automatic process control unit is used to solve delay fussiness according to real-time calculated delay inequality among the antennae using a delay wide range coarse measurement and a delay narrow range fine measurement. Coarse delay and fine delay among the antennae are adjusted in real time by through a delay adjusting module. Time-varying delay inequality among the other antennae and the standard antenna is calculated according to the relevant integral accumulation of the upper side band and the lower side band so as to achieve self-adaptive time-varying delay inequality tracking.

Description

technical field [0001] The invention relates to the field of deep space measurement and control communication, in particular to a technology for adaptively adjusting the time delay difference between antennas in real time in the deep space measurement and control communication, so as to synthesize antenna array signals. Background technique [0002] The challenges faced by deep space measurement and control communication are: longer distance, higher data rate, and more robust emergency measurement and control communication. Typical technical approaches to improve system transmission capabilities include: building larger-diameter antennas, developing receivers with lower noise, using newer encoding and decoding schemes, and so on. The cost of these technical approaches is extremely high, and the performance of the overall system can only be gradually improved a little bit. Using a large number of small antenna arrays to achieve the performance of large antennas with the same...

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Problems solved by technology

[0004] In order to solve the channel delay difference correction problem of antenna array signal synthesis in deep space measurement and control communication, the present invention proposes a method that can simplify the preparation work before the array task, and the correction accuracy is not limited to prior information such as station site and target ephemeris Accuracy, simple and practical adaptive correction of time delay difference; the further purpose is to provide a method for adaptive calculation and adjustment of the time delay difference of antenna array received signals, and the synthesis of antenna array based on this method is given device

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