Wideband imaging and parameter estimation of distributed objects using the continuous wavelet transform

Sensitivity Analysis of an Estimator-Correlator for the Detection of Spread Targets with Multiple Discrete Highlights

“…Also, Dixon and Sibul have done work in parameter estimation for spread targets [2], [3]. In [4] Roan and Sibul derived the Receiver Operating Characteristics (ROC) of the WTD-EC, but they only computed the ROC for the case where the covariance eigenvalues are all equal, and they did not compute those eigenvalues from the scattering functions and autoambiguity function of the transmit signal.…”

Developing efficient processing algorithms for wideband sonar signals

“…The method is also dependent upon the choice of the signal. There are various other iterative techniques such as gradient search algorithms [67], least-square methods [79], and regularization techniques such as the method of Tikhonov [79] are also available.…”

“…However, the Tikhonov method has some drawbacks of being computationally intensive with no guaranty of convergence [79]. To overcome the above drawbacks, wideband deconvolution [5], [83] of (5.14) has been used to estimate S wb (r',a').…”

“…From the point of view of active sonar, the scattering of acoustic energy from a target not only reveals the information about its range and velocity but can also be used to identify the target [79][80], [93][94]. The identification of more realistic targets in some other applications (e.g., spherical/cylindrical/cone shaped shell in sonar application, ground penetrating radar in land mine detection, ultra wideband radar in motion detection) could be an attractive area for further research.…”

“…Signal processing of acoustic signals scattered from distributed target has become a growing area of interest to the researchers. The delay-scale domain wideband spreading function (WBSF) is often used for characterizing the distributed target environments[67],[77][78][79][80][81][82][83][84][85][86][87]. This chapter investigates an efficient technique for estimating WBSF using Hermite decomposition.…”