介绍了天气雷达系统的回波强度自动标校技术,详细分析了新一代多普勒天气雷达自动标校的技术原理,对其在自动标校中采用的DDS技术以及标校技术的实施方法作了具体的介绍,并测量了回波强度自动标校的准确度进行了测量,给出了系统自动标校的实际检验结果,结果表明该系统发射参数,接收参数在出现较大变化时,能保证回波强度的测量准确度在1 dB以内。文中还对影响自动标校准确度的因素作了分析。

This paper briefly introduces the method of CINRAD system automatic calibration,and based on testing results to analyze how CINRAD calibrates the system with unique DDS techniques.The conclusion is CINRAD can keep the precision less than 1 dB while the transmitter power and receiver gain changing.

TN959