Estimation of differential delay and differential Doppler when signal characteristics are unavailable
Jay MacMullan, Herbert G. Greene · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1992
In this paper, we present a suboptimal decision-theoretic estimator for differential delay and differential Doppler which is appropriate for narrowband signals, accommodates relatively unconstrained noise environments and operates without prior knowledge of the signal's spectral or temporal characteristics. Under certain adverse environmental conditions, this estimator is significantly more accurate than a conventional ambiguity surface estimator. The computational penalty for this improved performance is relatively minor.