Moving target indication

About: Moving target indication is a research topic. Over the lifetime, 2653 publications have been published within this topic receiving 32435 citations.

An Overview on Radar Target Detection in Sea Clutter

Abstract: Three major difficulties in radar detection targets in the background of sea clutter are firstly summed up in this paper,and then several typical sea target detection technologies with great development potential are discussed in detail,and on this basis,the development trend of sea target detection technology is summarized as follows. Sea target detection technology gradually develops from single-dimensional information utilization and single-means processing to comprehensively utilizing the multi-dimensional information including the spatial,temporal,frequency,waveform and polarization information,and the multi-means processing including multiple angle of view,multiband,multiple pulses,multiple levels,multiple waveforms,coherent and non-coherent processing,in order to improve signal-to-clutter plus noise ratio.

Azimuth-invariant bistatic multichannel synthetic aperture radar for moving target detection and location

Abstract: Ground moving target indication (GMTI) is one of the most important applications of the bistatic synthetic aperture radar (SAR) system as well as the monostatic system. An algorithm for moving target detection and location is presented with an azimuth-invariant bistatic multichannel SAR, which consists of one transmitter (channel) and multireceivers (multichannel). The algorithm is based on the discussion of the particularities of the bistatic SAR configuration including coherence improvement and clutter characteristics. Then, the corresponding compensating methods including two-dimensional range-azimuth prefiltering and bistatic differential range correction are proposed to solve these particularities. It is shown that using the compensating methods, the stationary clutter can be suppressed and the moving parameters of ground targets can be estimated accurately. Finally, simulation results demonstrate the effectiveness of the proposed algorithm.

Adaptive waveform design in rapidly-varying radar scenes

Abstract: We consider a waveform-agile sensing algorithm for designing transmitted waveforms in rapidly-varying radar scenes to improve target detection performance. Specifically, we first track the scattering function of rapidly-varying sea clutter in low signal-to-clutter ratios (SCRs) at each burst by estimating the clutter's space-time covariance matrix. Simultaneously, we schedule the waveform to be transmitted in the next burst by minimizing the sea clutter influence based on the estimated clutter statistics. The effectiveness of our waveform-agile sensing approach is demonstrated by detecting a moving target in heavy sea clutter using configured waveforms, and then comparing the resulting performance to that of detecting the target using fixed-parameter linear frequency-modulated waveforms.