摘要
在动中通系统中,陀螺检测的载体扰动信号的精度直接关系到整个系统的精度和性能。针对陀螺噪声信号的特点,提出了一种将3σ模平方阈值和平移不变小波变换(translation invariant discrete wavelet trans-form,TIDWT)相结合的滤波算法,能够有效地抑制陀螺噪声信号和由小波变换产生的失真现象。仿真和实验结果表明,该滤波算法效果优于传统的小波滤波算法。
In a moving satellite communication system,the precision of the carrier＇s disturbance signal detected by the gyro has a direct impact on the precision and the performance of the system.According to the feature of the gyro noise signal,a filtering method which integrates the 3σ modular square threshold and translation invariant discrete wavelet transform（TIDWT） is proposed.The method can effectively eliminate the noise of gyro signals and the distortion produced in the wavelet transform.The simulation and experiment results show that the filtering results are better than the traditional wavelet filtering methods.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第4期825-828,872,共5页
Systems Engineering and Electronics
基金
教育部博士学科点专项科研基金(20070288022)
江苏省自然科学基金(BK2008404)资助课题
关键词
动中通
陀螺
滤波
平移不变小波变换
模平方阈值
3σ准则
moving satellite communication system
gyro
filtering
translation invariant discrete wavelet transform（TIDWT）
modular square threshold
3σ criterion
