介绍ＦＭＣＷ雷达高精度液位测量系统的组成及各单元的基本功能，讨论为满足系统发射信号的频率稳定性和线性度的要求所采取的ＶＣＯ非线性校正和温度补偿措施．针对系统的特点采用了开环校正的方法．为了滤除ＶＣＯ测量数据中的噪声，采用 Ｓａｖｉｔｚｋｙ－Ｇｏｌａｙ滤波器对测量的ＶＣＯ ｖ－ｆ曲线进行平滑处理，给出了实测结果．可以应用于油船舱内液位测量等对精度要求很高且环境苛刻的场合．-Introduce the composition of the FMCW radar precision level measurement systems and the basic functions of the unit to discuss the VCO nonlinear calibration and temperature compensation measures taken to meet the system transmit signal frequency stability and linearity requirements. Characteristics of the system open-loop correction. In order to filter the VCO noise in the measurement data, using the Savitzky-Golay smoothing filter measurements VCO v-f curves, the measured results. Can be applied to the tanker compartment level measurement precision demanding and harsh environment of the occasion.