摘要
针对传统滤波方法滤除激光陀螺随机噪声性能低的特点,提出了一种改进的空域相关滤波方法。该算法通过引入阈值系数概念,选取一个合适的阈值终止算法的迭代过程来去除残留的噪声信息。实验采用Allan方差法对滤波效果进行定量分析,结果表明基于改进的空域相关滤波方法能够减少迭代次数节约计算量,有效地减小随机误差,提高测量精度。
According to poor performance in denoising laser gyro random noise by using traditional filtering methods, an improved spatial correlation filtering algorithm is presented. In order to denoise rudimental noise information, the algorithm has been introduced,the conception of threshold coefficient and a suitable threshold to end iteration process of algorithm is selected. The method of Allan variance is used to analyze the filtering result quantitatively in experiment.The result shows that the filtering algorithm based on improved spatial correlation can reduce the number of iteration to save computation time and decrease the random error and improve the measuring precision of laser gyro effectively.
出处
《红外与激光工程》
EI
CSCD
北大核心
2007年第4期493-496,共4页
Infrared and Laser Engineering
