Design and Implementation of Signal Processing for Software Doppler Weather Radar

Abstract

Modern radar system technology is in an important period of development from digital radar to software radar. The software radar signal processing system has become the general trend of research, which is closely related to the meteorological and hydrological application requirements of the current radar system. The signal processor of the CINRAD, as the core part of data acquisition and processing of radar system, directly affects the accuracy of weather process detection. In view of the disadvantages of the traditional digital radar development mode of ‘taking hardware technology as the core and facing special functions, a Doppler weather radar signal processing system based on software design is proposed, which effectively solves the disadvantages of tight coupling of traditional radar hardware design and realizes software and hardware decoupling. Through the modular and loose coupling design, the rapid development of software technology is used to realize the rapid development and design of new functions of software radar signal processing system. The results show that: 1) the engineering software Doppler weather radar signal processing system has the advantages of software, modularization and loose coupling. 2) The software research and development mode can quickly and effectively improve the resource allocation ability of radar signal processing system, quickly realize new demands, and meet the practical needs of rapid development. 3) shorten the research and development cycle and reduce the hardware cost. The software based signal processing system has been widely used in SC and CD weather radar of National Meteorological Administration, and gradually extended to the radar system of civil aviation, hydrology and power grid industry.