Two basic methods of high resolution range measurement applying LFM pulses are introduced: compression in time domain and compression in frequency domain.
介绍了线性调频脉冲信号高分辨测距的两种基本方法：时域压缩测距和频域压缩测距。
The resolution and error were analyzed based on frequency measurement and period measurement, and the factors were given that influencing the speed measurements.
详细分析了周期测、频率法利用编码器脉冲计算超低转速时的分辨率及绝对误差，给出了影响转速测量的影响因素。
The present state of the dual-frequency laser interferometer in the world is introduced in brief. The trends of development to high resolution, high accuracy, high measurement speed etc. are given.
文章概述了国内外双频激光干涉仪产品的现状，介绍了近年来双频激光干涉仪向高分辨率、高精度、高测速等几个方向的发展趋势。
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