Results 201 to 210 of about 438,230 (253)

A block adaptive approach for clutter suppression

ICASSP '85. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
A new technique for the adaptive suppression of clutter signals and narrow band interference in pulse doppler radar system is presented. In this new technique two filters F1 and F2 in cascade are used, where the filter weights of F2 are updated from the filter weights of F1.
Siew Kok Hui, Yong Ching Lim
openaire   +1 more source

Bistatic SAR Clutter-Ridge Matched STAP Method for Nonstationary Clutter Suppression

IEEE Transactions on Geoscience and Remote Sensing, 2022
Clutter suppression is a challenging task in synthetic aperture radar-ground moving target indication (SAR-GMTI). In general, sufficient secondary samples are not easily acquired due to the non-stationary and non-homogeneous characteristics of bistatic SAR (BiSAR) clutter, resulting in worse clutter suppression results.
Zhongyu Li 0001, Hongda Ye, Zhutian Liu 0001, Zhichao Sun 0001, Hongyang An, Junjie Wu 0001, Jianyu Yang 0001   +6 more
openaire   +2 more sources

Adaptive radar clutter suppression

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295), 2002
The clutter return presents a severe problem in target detection for radar systems. Conventional radar systems assume the clutter is stationary, with energy concentrated in the low frequency domain. To minimize the effect of clutter, radar systems use a fixed high pass filter (HPF) to eliminate the clutter.
null Yi Xu, null Wei Feng Feng, null Jun Yan Hao, H.K. Hwang   +3 more
openaire   +1 more source

Suppression of ground and weather clutter

IEE Proceedings F Communications, Radar and Signal Processing, 1981
It is shown that Weibull-distributed weather clutter obeys a Weibull distribution after passing through a moving target indicator (MTI) processor realised by a double canceller. Both ground and weather clutter can be thus suppressed by using the method of MTI and new Weibull constant false alarm rate (CFAR) systems.
M. Sekine, S. Ohtani, T. Musha, T. Irabu, E. Kiuchi, T. Hagisawa, Y. Tomita   +6 more
openaire   +1 more source

Clutter property analysis and clutter suppression for Hypersonic airborne radar

2013 International Conference on Radar, 2013
Clutter property of a forward-looking array radar on Hypersonic Vehicle is analyzed and a method for clutter suppression using multi-stage space-time adaptive processing (STAP) is proposed. This method employs the elevation degree of freedom of the planar array to extract various range ambiguous clutter. Then range-unambiguous non-stationary clutter is
Zheng Liu, Yi Chen, Rong Xie, Lei Zhang
openaire   +1 more source

SAR clutter suppression using recursive waveforms

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
In this paper, we combine the waveform design method with the synthetic aperture algorithm to suppress clutter and generate clear microwave images of targets. The linear recursive model is introduced into the SAR operation principle and Kalman filter algorithm is used to estimate target and clutter responses in each azimuth direction based on their ...
Bingqi Zhu, Hui Sheng, Yesheng Gao, Kaizhi Wang, Xingzhao Liu   +4 more
openaire   +2 more sources

RFI suppression in SAR based on clutter estimation

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013
Radio Frequency Interference (RFI) can deteriorate imaging quality of low frequency band synthetic aperture radar (SAR). For SAR using Linear Frequency Modulation (LFM) signals, this paper proposes an RFI suppression method based on clutter estimation in range frequency domain. This method uses eigen-decomposition to complete RFI detection and gets the
Huan Wang, Jinping Sun, Yanping Wang, Shiyi Mao   +3 more
openaire   +1 more source

New clutter suppression approach for multifunction radar-radar resource management for the clutter suppression

IEEE Aerospace and Electronic Systems Magazine, 1990
The use of constant-false-alarm-rate (CFAR) techniques to keep false alarm rates at a suitable low level is reviewed. Radar resource management for clutter suppression, a novel approach for multifunction phased-array radar that can more effectively suppress clutter, is proposed.
openaire   +1 more source

Frequency diverse statistic filtering for clutter suppression

International Conference on Acoustics, Speech, and Signal Processing, 2003
By combining the conventional order-statistic filtering concept with the split-spectrum processing (SSP) technique, a method called frequency-diverse statistic filtering is obtained. Three types of frequency-diverse statistic filters, namely, weighted mean, median, and absolute-minimization, are examined.
X. Li, Nihat M. Bilgutay, Jafar Saniie
openaire   +2 more sources

Clutter suppression in search radars

1977 IEEE Conference on Decision and Control including the 16th Symposium on Adaptive Processes and A Special Symposium on Fuzzy Set Theory and Applications, 1977
A comparison of MTI and Optimum Pulse-Doppler processors is presented for the case where they coherently process the same number of pulses in a radar dwell. These results are presented in terms of probability of detection versus signal-to-noise or signal-to-clutter ratio, for a fixed false alarm probability.
openaire   +1 more source