Short Range Cloud Reflectivity Measurement Using X-Band Primary Surveillance Radar

2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI:10.1109/IMARC.2017.8449681

A. Upadhyay, Raghuram Pr, T. Varughese

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Abstract

A systematic procedure for using X-Band Primary Surveillance Radar (PSR) for the application of short range weather observation, forecasting and nowcasting has been presented in the paper. PSR stationed at Thumba Equatorial Rocket Launching Station (TERLS) operates in X-Band (9.3-9.5 GHz) having the capability to detect sea and airborne targets of Radar cross section of 10sq.m upto a range of 100km. The small wavelength of operation has enabled PSR to detect tiny rain droplets and lighter precipitation at the compromise of higher rain attenuation. The reflectivity from the hydrometers is calculated from the back scattered power in PSR after compensating for ground clutter and attenuation due to precipitation. The reflectivity values are then compared with the C-Band Polarimetric Doppler Weather Radar (DWR) stationed near to PSR. Good correlation has been observed in the data products upto the slant range of 50km. Using the Z-R (reflectivity - rainfall rate) relation, the rainfall estimate has been computed. The procedure formulated and validated in this paper reveals the utility of PSR as a short range weather Radar and also as a calibration tool for DWR.

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基于x波段初级监视雷达的近程云反射率测量

本文介绍了x波段初级监视雷达(PSR)在近程天气观测、预报和临近预报中的系统应用程序。驻扎在Thumba赤道火箭发射站(TERLS)的PSR在x波段(9.3-9.5 GHz)工作，具有探测雷达横截面为10平方公里的海上和空中目标的能力。M的射程可达100公里。较小的工作波长使PSR能够探测到微小的雨滴和较轻的降水，但却牺牲了较高的降雨衰减。比重计的反射率是在补偿了地面杂波和降水衰减后，由PSR中的后向散射功率计算得到的。然后将反射率值与驻扎在PSR附近的c波段偏振多普勒天气雷达(DWR)进行比较。在50km的倾斜范围内，数据产品具有良好的相关性。利用Z-R(反射率-降雨率)关系，计算了降雨量估计。本文制定和验证的程序揭示了PSR作为近程天气雷达和DWR校准工具的实用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)

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