基于 FPGA 的逐次逼近算法实现激光干涉信号细分

Successive Approximation Division Algorithm in Laser lnterference Signal Subdivision Based on FPGA

为了实现激光干涉测量中信号的高速度、高精度细分，对正切细分算法中的除法运算进行了改进，采用逐次逼近算法替代使用较多的移位相减算法。实验证明逐次逼近算法比移位相减算法运算速度更快、资源占用较少。更适合 FPGA 信号细分高速度、高精度要求。

In order to achieve the goal of the laser interference measurement signal being in high speed and high precision subdivision,the division of tangent subdivision algorithm is improved. The successive approximation algorithm instead of using shift subtraction algorithm is used more in the past. Experiments prove that successive approximation algorithm is faster than shift subtractionm,resource usage is less. successive approximation algorithm is more suitable for FPGA based on high speed and high precision requirements.