Results 31 to 40 of about 9,662,076 (112)
SAR ground moving target's along‐track velocity estimation in the complex image domain via SoWVD
The Journal of Engineering, Volume 2019, Issue 20, Page 7026-7029, October 2019., 2019 A ground moving target is always defocused in the synthetic aperture radar (SAR) image domain due to the along‐track velocity. In the image domain, a moving target's complex response along the azimuth direction can be modelled as a linear frequency‐modulated signal, therefore, its Doppler rate, as well as the along‐track velocity, can be estimated ...
Zuzhen Huang +3 more
wiley +1 more source
, 2022 S.1663-1668Passive radar has reached a stage of maturity such that it can be mounted on mobile platforms for the purpose of moving-target-detection.
Colone, Fabiola +2 more
core +2 more sources
An ISAR target motion estimation algorithm based on a differential semblance criterion
Electronics Letters, Volume 61, Issue 1, January/December 2025.This study presents a novel approach for improving rotational motion estimation in multistatic Inverse Synthetic Aperture Radar (ISAR) imaging through a Differential Semblance Optimization (DSO) criterion. By reducing discrepancies across images from multiple transmitter–receiver pairs, our method enables precise yaw rotation estimation and produces ...
D. P. Huxley +2 more
wiley +1 more source
Deceptive jamming against multi‐channel SAR‐GMTI
The Journal of Engineering, Volume 2019, Issue 20, Page 7105-7109, October 2019., 2019 Aimed at the problem that the deceptive jamming against synthetic aperture radar ground moving target indication generated by single jammer cannot work effectively in multi‐channel SAR, a novel deceptive jamming against multi‐channel SAR‐GMTI based on two jammers is studied. First, signal model of the novel deceptive jamming is built.
Jingke Zhang +3 more
wiley +1 more source
Detecting flying objects in synthetic aperture radar images using Moving Target Indicator methods
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.This paper presents a moving target indicator detection method (MTI) for detecting planes during take‐off in synthetic aperture radar data, and a theoretical ground‐clutter suppression method via cross‐track interferometry to detect airborne targets. The MTI method combines interferometric processing, acceleration compensation, and autofocus techniques.
Elliot J. Hansen +2 more
wiley +1 more source
THz‐SAR Vibrating Target Imaging via the Bayesian Method
International Journal of Antennas and Propagation, Volume 2017, Issue 1, 2017., 2017 Target vibration bears important information for target recognition, and terahertz, due to significant micro‐Doppler effects, has strong advantages for remotely sensing vibrations. In this paper, the imaging characteristics of vibrating targets with THz‐SAR are at first analyzed.
Bin Deng +5 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.We propose a three‐element non‐uniform linear array (NULA) design strategy for OFDM‐based radar on a moving platform, optimizing multi‐channel DPCA processing with the T‐DPCA‐RF filter. Unlike heuristic approaches, our method constrains the DPCA filter response to avoid blind velocity effects within a target velocity range.
Andrea Quirini +2 more
wiley +1 more source
MIMO SAR Imaging for Wide‐Swath Based on Compressed Sensing
Mathematical Problems in Engineering, Volume 2017, Issue 1, 2017., 2017 To reduce the amount of data to be stored and software/hardware complexity and suppress range ambiguity, a novel MIMO SAR imaging based on compressed sensing is proposed under the condition of wide‐swath imaging. Random phase orthogonal waveform (RPOW) is designed for MIMO SAR based on compressed sensing (CS).
Feng Liu +3 more
wiley +1 more source
Comparison of GMTI Performance Using DPCA for Various Clutters
, 2017 합성 개구면 레이다(synthetic aperture radar: SAR) 시스템을 이용한 지상 이동 표적 탐지(ground moving target indicator: GMTI)는 상대적으로 짧은 시간에 넓은 지상 지형에 존재하는 이동 표적을 탐지하여 교통통제 및 군사적 위협에 대한정보를 획득하는 기술이다. Displaced phase center antenna(DPCA) 방법은 실시간 GMTI에 적합한 탐지방법이지만, 측정지역에 따른 클러터 분포의
오태봉 +6 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2681-2697, December 2024.SAR GMTI is of great importance for both civlisation and military applications. The clutter suppression performance is an important assurance for the accuracy and precision of GMTI. To achieve better clutter suppression performance, it often requires extremely precise registration of multi‐channel data, including polarization and interferometric ...
Jing Xu +3 more
wiley +1 more source