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| 小波降噪在相位差变化率定位技术中的应用 | |
| 引用本文： | 宋德亮,张国毅,齐丽君. 小波降噪在相位差变化率定位技术中的应用[J]. 吉林大学学报(信息科学版), 2009, 27(3): 235 |
| 作者姓名： | 宋德亮 张国毅 齐丽君 |
| 作者单位： | 空军航空大学,航空信息对抗系,长春,130022;空军航空大学,航空信息对抗系,长春,130022;空军航空大学,航空信息对抗系,长春,130022 |
| 摘 要： | 针对实际工程中因相位干涉仪的测量误差较大而导致相位差变化率的测量精度较低、定位精度迅速下降的问题，利用小波阈值降噪法对相位差及其变化率信息进行平滑滤波。该方法可在相位差测量误差较大的情况下进行快速高精度定位。仿真结果表明,相位差测量误差为0.366 5 rad时,相对定位精度在50 s内可达5％。 |
| 关 键 词： | 小波降噪 相位差变化率 阈值 无源定位 |
Applying Wavelet De-Noising to Passive Location Technology Based on Phase Difference Rate of Change |
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| SONG De-liang,ZHANG Guo-yi,QI Li-jun. Applying Wavelet De-Noising to Passive Location Technology Based on Phase Difference Rate of Change[J]. Journal of Jilin University:Information Sci Ed, 2009, 27(3): 235 | |
| Authors: | SONG De-liang ZHANG Guo-yi QI Li-jun |
| Affiliation: | Department of Aviation Communication Counter,Aviation University of Air Force,Changchun 130022,China |
| Abstract: | In practice the phase difference measuring error with phase-interferometer is so great that we can't acquire precise phase difference rate of change,and the location precision declines rapidly.A method is presented,which makes use of wavelet threshold de-noising algorithm to level off the metrical phase difference and metrical phase difference rate of change.Consequently the radiant point target can be located with high speed and precision in case of great measuring error of phase difference.Simulations sho... |
| Keywords: | wavelet de-noising phase difference rate of change threshold passive location |
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