A method of multiple parameters estimation for multiple chirp signals is proposed,a brief performance analysis is also described.Compared with references,the computational load of the method is more attractive,it is favorable to realize for real-time.It is no need for multiple-dimensions search.The results of simulation show that the method can accurately estimate multiple parameters of multiple chirp signals under the lower ratio of signals-to-noise.
Chung T H,Cheng J Y.Maximum likelihood estimation of direction of arrival and frequency sweeping rate with linear chirp signals[J].IEEE Signal Processing Letters.1995,2(8):163-165[2]Liang R M,Arun K S.Parameter estimation for superimposed chirp signals.In Proceeding of International Conference of Acoustics,Speech and Signal Processing,San Francisco,California:1992,5:273-276.[3]Djuric P M,Kay S M.Parameter estimation of chirp signals.IEEE.Trans.on ASSP,1990,ASSP-38(12):2118-2126.[4]Peleg S,Porat B.Linear FM signal parameter estimation from discrete-time observations.IEEE Trans.on Aerospace and Electronics System,1991,AES-27(4):607-616.[5]Abatzoglou T.Fast maximum likelihood joint estimation of frequency and frequency rate[J].IEEE Trans.on Aerospace and Electronics System.1986,AES-22(6):708-715[6]林茂庸,柯有安.雷达信号理论.北京:国防工业出版社,1984,第6章,6.2节.[7]Kag S.A fast accurate single frequency estimator.IEEE Trans.on ASSP,1989,ASSP-37(12):1987-1990.