Signal phase difference estimation device and method in antenna aligning array based on circulating cross-correlation

An antenna array and antenna signal technology, applied in the field of deep space exploration, can solve problems such as complex algorithms and limited signal-to-noise ratio conditions, and achieve the effects of low estimation deviation, reduced calculation amount, and high estimation variance
CN101969329BActive Publication Date: 2014-05-21NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
Publication Date
2014-05-21

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Abstract

The invention provides a signal phase difference estimation device in an antenna aligning array based on circulating cross-correlation, and the antenna aligning array comprises a plurality of receiving antenna units. The device is used for calculating the phase differences of antenna signals of the antenna aligning array in stable circulation, and comprises one or two matched filters, a circulating cross-correlation module and a phase difference resolving module, wherein the filter is used for matched filtering for the antenna signal which is subjected to time delay, amplitude weighting and phase adjustment, and matched filtering for a difference signal between the signal which is subjected to time delay, amplitude weighting and phase adjustment and a reference signal; the circulating cross-correlation module is used for calculating a circulating cross-correlation function of the signal and the difference signal which are both subjected to matched filtering; and the phase difference resolving module is used for calculating the phase difference of the antenna signal according to the circulating cross-correlation function. The invention also provides a signal phase difference estimating method in the antenna aligning array based on circulating cross-correlation, a signal synthesis device, a signal synthesizing method, an antenna aligning array signal receiving system and an antenna aligning array signal receiving method.
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Description

technical field

[0001] The invention relates to the field of deep space exploration, in particular to a technology for calculating the phase difference of signals in deep space signal reception so as to synthesize antenna array signals. Background technique

[0002] The rapid development of long-distance communication and navigation in deep space exploration and radio astronomy has put forward new requirements for the performance of radio telescopes. Due to the increase of development costs and technical limitations, the improvement of the G / T value of a single antenna has come to a standstill. The US Deep Space Network (DSN) strategic plan has identified a possible growth path: using radio frequency bands, and obtaining higher antenna gain through a large number of small antenna arrays. Antenna arrays offer the advantage of being able to receive data at a higher data rate than can be received with a single antenna, which has many desirable advantages: better performance, g...

Claims

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