星箭发射初始段测量的准确性直接关系到发射场区的安全。文章从靶场的雷达环境出发，分析了动目标跟踪（ＭＴＴ）数学逼近原理。针对测角中的多普勒附加调制问题指出：为了保证测量的准确性，必须对测量系统进行补偿。经实验室计算机仿真和工程样机在靶场测量的数据分析表明，补偿技术是发射初始段测量的一种有效手段。

The measurement accuracy of range original segment is very important for the safety of a launching site. This paper, starting from radar environment of the launching site, analyzes the principle of MTT (moving-target-tracking) and the problem of moving target's Doppler modulation. In order to guarantee the measuring accuracy, radar system must be compensated. By means of the data analysis of the computer simulation and engineering model at range, it shows that compensation technique is an effective measure which implements original segment measurement of carriers (satellite, rocket, missile).

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