摘要
激光测距检相算法中,常规的过零检测法检相原理简单,但由于谐波、噪声干扰等影响容易出现较大误差。文章对数字相关法和傅里叶变换法进行了仿真对比,并对改进的傅里叶算法在DSP检相中的优势进行了分析。
In phase-measuring algorithm for laser range finding, the conventional zero-crossing detection method is quite simple but its result is not accurate enough due to the interferences of harmonic waves and noises. The paper makes a simulation comparison between digital correlation theory and fast Fourier Transform （FFT）; besides, the ad- vantages of advanced FFT in DSP phase-measuring are also analyzed.
出处
《红水河》
2013年第2期39-42,共4页
Hongshui River
关键词
激光测距
算法
FFT
检相
laser range finding
algorithm
FFT
phase-measuring
