专利名称：Robust predictive deconvolution system and
method
发明人：Shannon D. Blunt,Karl R. Gerlach申请号：US10673343申请日：20030930
公开号：US20050046612A1公开日：20050303
专利附图：
摘要：A method for processing a received, modulated pulse (i.e. waveform) thatrequires predictive deconvolution to resolve a scatterer from noise and other scatterersincludes receiving a return signal; obtaining L+(2M−1)(N−1) samples y of the return
signal, where y(l)={tilde over (x)}(l)s+ν(l); applying RMMSE estimation to each successive Nsamples to obtain initial impulse response estimates [{circumflex over (x)}{−(M−1)(N−1)}, .. . ,{circumflex over (x)}{−1},{circumflex over (x)}{0}, . . . ,{circumflex over (x)}{L−1},{circumflexover (x)}{L}, . . . ,{circumflex over (x)}{L−1+(M−1)(N−1)}]; computing power estimates{circumflex over (ρ)}(l)=|{circumflex over (x)}(l)|for l=−(M−1)(N−1), . . . ,L−1+(M−1)(N−1);computing MMSE filters according to w(l)=ρ(l)(C(l)+R)s, where ρ(l)=|x(l)|is the power ofx(l), and R=E[v(l)v(l)] is the noise covariance matrix; applying the MMSE filters to y toobtain [{circumflex over (x)}{−(M−2)(N−1)}, . . . ,{circumflex over (x)}{−1},{circumflex over (x)}{0}, . . . ,{circumflex over (x)}{L−1},{circumflex over (x)}{L}, . . . ,{circumflex over (x)}{L−1+(M−2)(N−1)}]; and repeating (d)-(f) for subsequent reiterative stages until a desiredlength-L range window is reached, thereby resolving the scatterer from noise and otherscatterers. The RMMSE predictive deconvolution approach provides high-fidelity impulseresponse estimation. The RMMSE estimator can reiteratively estimate the MMSE filter foreach specific impulse response coefficient by mitigating the interference fromneighboring coefficients that is a result of the temporal (i.e. spatial) extent of thetransmitted waveform. The result is a robust estimator that adaptively eliminates thespatial ambiguities that occur when a fixed receiver filter is used.
申请人：Shannon D. Blunt,Karl R. Gerlach
地址：Alexandria VA US,Chesapeake MD US
国籍：US,US
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容