Results 241 to 250 of about 9,067 (287)

Deceptive jamming suppression with frequency diverse MIMO radar

Signal Processing, 2015
Simulated false targets cannot be easily discriminated and suppressed with traditional radar systems, especially for the mainbeam deceptive jamming. In this work, we explore the multiple-input multiple-output (MIMO) radar with frequency diverse array (FDA) as the transmit array and study its ability to suppress the deceptive jamming in joint transmit ...
Jingwei Xu, Guisheng Liao, Shengqi Zhu
exaly   +2 more sources

Jamming suppression in Dual-channel PolSAR

2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar, 2009
In the paper, we provide a method to suppress both the blanketing jamming and the deceptive jamming in Dual-channel PolSAR (D-PolSAR) system. The model of the signal and jamming in the D-PolSAR system is analyzed. By comparing the difference between jamming and real signal, a two-channel-cancellation (TCC) method based on phase compensation is proposed
Guo Rui, Sun Guang-cai, Zhou Feng, Xing Meng-dao   +3 more
openaire   +1 more source

Noise FM jamming suppression via logarithm transform

2008 International Conference on Communications, Circuits and Systems, 2008
A new method for suppression of noise FM jamming is presented. In the method, a logarithm transform is first designed to estimate the instantaneous amplitude and phase of the noise FM jamming precisely, and then the noise FM jamming is suppressed efficiently by subtracting the component reconstituted with the estimated instantaneous amplitude and phase
null Dongping Du, null Bin Tang
openaire   +1 more source

Repeater jamming suppression technology based on HHT

2016 IEEE Radar Conference (RadarConf), 2016
Repeater jamming is a newly proposed jamming strategy much effective against linear frequency modulated (LFM) radars. In this paper, a general repeater jamming suppression algorithm is proposed based on Hilbert-Huang transform (HHT). Firstly, with the application of empirical mode decomposition (EMD), the time delay and duration of a repeater jamming ...
Jiaqi Ren, Xuchu Dai, Hui Li
openaire   +1 more source

Mainlobe jamming suppression via blind source separation

2018 IEEE Radar Conference (RadarConf18), 2018
This paper deals with the suppression problem of mainlobe jamming with high power to achieve the direction of arrival (DOA) estimation of weak target for phased array radar. A novel algorithm involving two-step process is introduced. Specifically, we first estimate the steer vector and the waveform of mainlobe jamming by resorting to blind source ...
Mengmeng Ge, Guolong Cui, Xianxiang Yu, Datong Huang, Lingjiang Kong   +4 more
openaire   +1 more source

Accidental radio jamming suppression in passive radar

2008 IEEE Radar Conference, 2008
Bistatic passive radar based on opportunity illuminators such as FM radio, is a hotspot in the domain of radar. The direct/multi-path signals cancellation techniques(DSC) have been discussed by many scholars. These considered algorithms adopt a single-stage adaptive filter processor frame, have sufficient performance in the cancellation of the direct ...
null Heng Zheng, null Hongli Zhao, null Fei Li   +2 more
openaire   +1 more source

Jamming interference suppression in ultra-wideband communications

MILCOM 2008 - 2008 IEEE Military Communications Conference, 2008
In this paper we analyze the performance of an ultra-wideband (UWB) communication system in the presence of pulsed Gaussian jamming. We derive the optimum and suboptimum receivers for such a system and evaluate the system performance. Two low complexity suboptimum receivers are designed using a Gaussian approximation (linear) and the locally optimum ...
Chih-Wei Wang, Wayne E. Stark
openaire   +1 more source

High-Dynamic GNSS Jamming Suppression Techniques

2017
All the jamming mitigation techniques introduced in Chap. 2 assume that receivers are in a stationary state or in a state of low to medium dynamic motion, which means that relative to GNSS receivers, the direction of jamming does not change or changes slowly, as a result there is enough snapshots to perform jamming covariance matrix estimation, so ...
Renbiao Wu, Wenyi Wang, Dan Lu, Lu Wang, Qiongqiong Jia   +4 more
openaire   +1 more source

Spatial Suppression of Jamming Signals in Extreme Conditions

2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS), 2019
Two methods of spatial suppression of jamming signals (JSs) in extreme conditions are described and analyzed. The first method protects a victim receiver (Rx) from and prevents disruption of signal reception by extremely strong JSs that can completely desensitize or even damage its input circuits.
Yefim Poberezhskiy, Gennady Poberezhskiy
openaire   +1 more source

Smart noise jamming suppression by using atomic decomposition

2017 3rd IEEE International Conference on Computer and Communications (ICCC), 2017
This study considers the target identification problem for the linear frequency modulation (LFM) radars interfered by the smart noise, which is a newly proposed active jamming pattern much effective against the LFM radars. An adaptive jamming suppression algorithm is proposed by utilizing the atomic decomposition method.
Zilong Zhang, Yanan Wu, Jiaqi Ren, Kun Dong   +3 more
openaire   +1 more source