Abstract
The variation of rotary joint is one of the primary reasons that result in dynamic deviation of ZDR and ΦDP as polarimetric parameters, and external instruments are needed to detect and calibrate to ensure the amplitude and phase consistency for dual-polarization weather radar. This paper analyzes the impact of rotary joint of dual-polarization weather radar on ZDR and ΦDP, and it proposes a detection and calibration method using external instrument based on baseline curve of deviation. Then this method is used to test and calibrate a S-band dual-polarization weather radar produced by Beijing Metstar Radar Co., Ltd., and the results are analyzed. It is shown that ZDR and ΦDP deviation introduced by rotary joint can satisfy requirement of relevant technical specifications, and this method can reduce deviation of amplitude and phase through calibration to enhance the reliability of radar observation data effectively.
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Nan, S., Xu, H., Zhichao, B., Yubao, C., Xinmin, P., Jianfeng, Q. (2020). The Impact of Rotary Joint on Deviations of Amplitude and Phase and Its Calibration for Dual-Polarization Weather Radar. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 516. Springer, Singapore. https://doi.org/10.1007/978-981-13-6504-1_99
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DOI: https://doi.org/10.1007/978-981-13-6504-1_99
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