An adaptive correction technique of array antenna based on carrier phase measurement
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The 54th Research Institute of China Electronics Technology Group Corporation State Key Laboratory of Satellite Navigation System and Equipment Technology,Shijiazhuang 050081, China

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TN973.3

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    Abstract:

    Aiming at the problem of array correction in the anti-interference processing of satellite navigation array, an array antenna adaptive correction technology based on carrier phase measurement is adopted in this paper. Each array element of the array antenna is used to receive the same satellite signal, capture, track, observe and extract the carrier phase of each channel of the specified satellite, calculate the carrier phase difference, calculate the error between each channel, and correct the amplitude and phase inconsistency of the array antenna, so as to reduce the impact of amplitude and phase inconsistency on the performance of anti-jamming algorithm. Compared with the traditional array antenna adaptive correction algorithm, it has the following advantages: 1) it can be corrected separately for each satellite; 2) It can comprehensively correct the channel phase inconsistency caused by RF channel inconsistency, antenna array installation error and AD sampling inconsistency; 3) The channel error of the satellite can be corrected in real time. Simulation results show that this method has good amplitude and phase error suppression effect.

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  • Received:
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  • Online: April 08,2024
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