Title :
Joint estimation of time delays, Doppler shifts and DOAs of multipath signals
Author :
Yi, Min ; Wei, Ping ; Xiao, Xian-Ci
Author_Institution :
Coll. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The paper presents a new approach for jointly estimating the time delays, DOAs, and Doppler shifts of multipath reflections of a signal. Based on the repetitive characteristic of the transmitted signal, a signal model is developed, which has the rotational invariance property. The PRO-ESPRIT algorithm is applied to the model. The respective Doppler shifts, time delays and DOAs can then be estimated from the rotational invariance factors and corresponding eigenvectors. The efficiency of the proposed approach is validated by computer simulations.
Keywords :
Doppler shift; delay estimation; direction-of-arrival estimation; eigenvalues and eigenfunctions; frequency estimation; invariance; multipath channels; radar signal processing; sonar signal processing; DOA estimation; Doppler shift estimation; ESPRIT; eigenvectors; multipath reflections; multipath signals; radar systems; rotational invariance factors; signal model; sonar systems; time delay estimation; Delay effects; Delay estimation; Direction of arrival estimation; Doppler radar; Doppler shift; Parameter estimation; Reflection; Sensor arrays; Sensor phenomena and characterization; Sonar;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346307
