A New Method for Joint Estimation of 3-D Parameters of Coherent Signals over Wide Frequency Band
Gang Du, Xinying Jiang · Signal Processing · 2008
Based on nonuniform L-shaped array,the paper presents a new time-space processing method for joint estimation of fre- quency and 2-D arrival angles of coherent signals over a wide frequency band,which is called wide-band time-space smoothing (WTSS) algorithm. The algorithm can precisely estimate 3-D parameters of coherent signals with same digital frequency. Getting rid of the cosily multidimensional spectrum peak search,it has smaller computational load,with parameters paired automatically. In addition,based on WTSS algorithm and the characteristic of the L-shaped array,3-D parameter estimation of coherent signals with the same frequency is re- alized successfully by a separable method. It may be implemented in parallel way for real-time processing. Computer simulation confirms its effectiveness.