A new TDOA estimation method in Three-satellite interference localisation

作者：Dou Huijing^*; Lei Qian; Li Wenxue; Xing Qingqing

来源：International Journal of Electronics, 2015, 102(5): 839-854.

DOI：10.1080/00207217.2014.942886

• Three-satellite interference localisation
• threshold de-noising
• time difference of arrival (TDOA)
• wavelet transform
• Hilbert transform

Time difference of arrival (TDOA) parameter estimation is the key to Three-satellite interference localisation. Therefore, in order to improve the accuracy of Three-satellite interference location, we must estimate the TDOA parameter accurately and effectively. Based on the study of wavelet transform correlation TDOA estimation algorithm, combining with correlation and Hilbert subtraction method, we put forward a high precision TDOA estimation method for Three-satellite interference location. The proposed algorithm utilises the characteristics of the zero-crossing point of Hilbert transform method corresponding to the correlation peak point of correlation method, using correlation function of wavelet transform correlation method minus the absolute value of its Hilbert transform, to sharpen peak point and improve the TDOA estimation precision, so that the positioning is more accurate and effective.

• 出版日期2015-5-4
• 单位北京工业大学