通过对水负荷射频功率测量问题的深入研究，详细分析了阻抗失配损耗引起的测量误差的机理，得到了失配损耗与工程可操作的参数——驻波比间的关系式，由计算机仿真出了可用于工程实践的曲线，并提出了一种基于一次反射的提高功率测量精度的方法。为通用型磁控管测试设备提高测量精度提供了理论依据和工程应用的精度改善方法，具有效强的应用价值。

The method of radar transmitter hydro load power measurement under the condition of no reflection?primary reflection and secondary reflection is studied,and the errors of it are analysed in this paper. And the equation of the relation between unmatched loss and standing wave ratio is also derived through the analysis of measured result.The curve that can be used by engineering design is also given.At last,the correction method is brought forward.

TN95