The present invention provides a method and apparatus for enhancing active sonar signal detection by estimating the channel/target response utilizing measured values of the excitation signals and received signals. A Wiener/Volterra series expansion for the excitation and received signals is used as a...http://www.google.com/patents/US6711094?utm_source=gb-gplus-sharePatent US6711094 - Method and apparatus for active sonar detection enhancement
