Computer simulation study of MTI using FFT and nonlinear processors
23 Mar 1992-Vol. 5, pp 505-508
TL;DR: An analysis of a digital moving target indicator (DMTI) using the traditional fast Fourier transform (FFT) and the recently developed nonlinear spectral estimation techniques is presented, and it clearly shows the superiority of the non linear spectral estimation methods, especially for short data lengths.
Abstract: An analysis of a digital moving target indicator (DMTI) using the traditional fast Fourier transform (FFT) and the recently developed nonlinear spectral estimation techniques is presented. The performance evaluation has been done using simulated target and clutter models in the presence of white Gaussian noise. MTI improvement factor has been computed for all the cases, and it clearly shows the superiority of the nonlinear spectral estimation methods, especially for short data lengths. >
Citations
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Patent•
12 Apr 1999TL;DR: In this paper, a moving target simulator system for pulse Doppler radar includes a processor for processing received radar signal and transforming the signal into patterned pulses before subjecting the patterns to an 180 degree phase shift by a phase shifter.
Abstract: A moving target simulator system for pulse Doppler radar includes a processor for processing received radar signal and transforming the signal into patterned pulses before subjecting the patterned pulses to an 180 degree phase-shift by a phase-shifter. The system also includes a reference signal provided by a corner reflector located in proximity of the simulator. The reference signal and a phase-shifted signal from the simulator are processed by the radar equipped with a phase corrector circuitry to correct a phase drift problem associated with the use of a small antenna with the simulator.
5 citations
References
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Book•
01 Jan 1987
TL;DR: This new book provides a broad perspective of spectral estimation techniques and their implementation concerned with spectral estimation of discretespace sequences derived by sampling continuousspace signals.
2,731 citations
TL;DR: A formula is obtained for the autocorrelation function of the clutter, assuming Gaussian distributions of doppler and scintillation for the scatterers and a computer model developed to simulate clutter with predefined characteristics.
Abstract: This article is concerned with the video signal obtained when a coherent pulsed radar scans through moving scintillating scatrefers (clutter). In particular, a formula is obtained for the autocorrelation function of the clutter, assuming Gaussian distributions of doppler and scintillation for the scatterers. Results are included on a computer model developed to simulate clutter with predefined characteristics.
19 citations
DOI•
01 Aug 1983TL;DR: In this article, the use of a prediction error filter (realised in the form of an adaptive lattice filter) for enhancing the detection of a moving target (for example aircraft and migrating flocks of birds) in the presence of clutter is described.
Abstract: The paper describes the use of a prediction-error filter (realised in the form of an adaptive lattice filter) for enhancing the detection of a moving target (for example aircraft and migrating flocks of birds) in the presence of clutter. This process is well suited for use in a surveillance radar environment (for example air-traffic control). The clutter may arise owing to reflections from ground and weather disturbances. Experimental results are included in the paper, comparing the performance of the processor with that of a conventional moving-target indication (MTI) filter.
15 citations