线性度校正技术是高分辨率LFMCW雷达的关键技术之一。文中首先分析常见的线性度校正方法及相应的检测方法，在此基础之上提出一种新型的线性度检测方法。该方法将短时傅里叶变换和小波变换有机地结合起来，并利用修正算法改善其性能。仿真结果表明，该方法能有效地检测LFMCW雷达的调制线性度。

The linearity-correction technique is one of key techniques of a high resolution LFMCW radar. After linearitycorrection techniques and their corresponding linearity-testing methods are introduced, a new method of testing linearity of a LFMCW radar based on short-time Fourier transform and wavelet transform is also proposed. Furthermore, a modified method is presented. Simulation results show that it can efficiently test frequency-modulation linearity.

TN958

国家自然科学基金资助项目（60272085）