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This letter theoretically extends and applies the overlapped subaperture algorithm (OSA) for the challenging spotlight synthetic aperture radar (SAR) imaging in a quasi-forward-looking (QFL) geometry. A parameter-adjusting framework, in which the radar parameters relate closely to the geometry, is employed to mitigate the spatial signal coupling. By innovatively fitting the phase error induced by...
This paper presents a new target tracking method. The presented method which named marginalized cubature Kalman filter is based on standard cubature Kalman filter and marginalized moment estimator. The marginalized moment estimator uses sigma-points sampling and Guass-Hermite integration to estimate the mean and covariance. The proposed algorithm which is called MCKF in short, uses marginalized moment...
The 1-DOA estimation algorithm is used to estimate azimuth of signals. DML (Determined Maximum Likelihood) is a kind of algorithm for parameter estimation of determined narrowband signals, which theoretically has advantages of high precise as well as high suppression to strong noise and coherent signals. However, there are problems of high computation complexity and local convergence. Therefore, the...
Losses due to leaking is severe in underground pipes, which necessitates studies on techniques for detecting and locating the leaks. The classical adaptive time delay estimation method, LMSTDE, will give a biased estimate when input data are contaminated with noise. This paper develops and analyses a new adaptive filter structure for time delay estimation (TDE), which can eliminate this bias. Simulation...
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