Results 1 to 10 of about 1,828,077 (252)

An Advanced Phase Synchronization Scheme Based on Coherent Integration and Waveform Diversity for Bistatic SAR

Remote Sensing, 2021
In the bistatic synthetic aperture radar (BiSAR) system, the deviation between two oscillators in different platforms will cause an additional modulation of BiSAR echoes.
Da Liang, Heng Zhang, Yonghua Cai, Kaiyu Liu, Ke Zhang   +4 more
doaj   +3 more sources

Azimuth Ambiguity Suppression for Hybrid Polarimetric Synthetic Aperture Radar via Waveform Diversity

Remote Sensing, 2020
Hybrid quadrature polarimetric (hybrid quad-pol) synthetic aperture radar (SAR) is proposed as a potential candidate for the full-polarimetric SAR mode. It allows balanced range ambiguity performance and simplified system structure.
Pengfei Zhao, Yunkai Deng, Wei Wang, Dacheng Liu, Robert Wang   +4 more
doaj   +3 more sources

Countermeasures for range false target jamming based on quasi Karhunen-Loève translate basis dictionary learning method

Zhongguo Jianchuan Yanjiu, 2022
ObjectivesWaveform diversity technology is an effective anti-jamming measure against range false target jamming. However, in an environment of strong energy jamming, the high side-lobe caused by the jamming signal mismatch will still affect the detection
Lexin YU, Hui ZHANG, Linshu GONG, Tao JIANG   +3 more
doaj   +1 more source

Precise Ambiguity Performance Evaluation for Spaceborne SAR with Diverse Waveforms

Remote Sensing, 2023
The ambiguity suppression is a technical challenge for the present generation of spaceborne synthetic aperture radar (SAR) systems since this kind of suppression does not take the high spatial resolution and wide coverage into account simultaneously. The
Guodong Jin, Yu Wang, Hui Yang, Chen Song, Jingkai Huang, Wei Wang, Yunkai Deng, Daiyin Zhu   +7 more
doaj   +1 more source

Double-component combined generalized weighted fractional Fourier transform based waveform design for massive MIMO

Tongxin xuebao, 2023
In order to overcome the drawback of conventional diversity technologies that sacrificing valuable communication resources such as data rate or bandwidth in massive multiple input multiple output (MIMO) systems, a double-component combined generalized ...
Xingjian LI, Zhiqun SONG, Yong LI, Lizhe LIU, Bin WANG, Chang WANG   +5 more
doaj   +2 more sources

Radar-centric DFRC Signal Design: Overview and Future Research Avenues

Leida xuebao, 2023
During the confrontation of electronic systems, it is challenging to deal with the enemy’s comprehensive electronic weapons by simply combining electronic equipment, such as radar, communication, surveillance, and jammers. Hence, to meet the requirements
Xianxiang YU, Xue YAO, Jing YANG, Jun LU, Guolong CUI, Lingjiang KONG   +5 more
doaj   +1 more source

Design of multiple‐input multiple‐output radar amplitude‐bounded waveforms with desired ambiguity function based on sequential quadratic programming

IET Radar, Sonar & Navigation, 2023
The transmit waveform with ambiguity function specifications in the range‐Doppler plane has been of great interest in traditional single antenna radar systems in recent years.
Wenyan Wei, Yinsheng Wei, Lei Yu
doaj   +1 more source

Hybrid FSK–FDM Scheme for Data Rate Enhancement in Dual-Function Radar and Communication

Sensors, 2023
In this paper, we present a hybrid frequency shift keying and frequency division multiplexing (i.e., FSK–FDM) approach for information embedding in dual-function radar and communication (DFRC) design to achieve an improved communication data rate.
Muhammad Fahad Munir, Abdul Basit, Wasim Khan, Athar Waseem, Muhammad Mohsin Khan, Ahmed Saleem, Salman A. AlQahtani, Amil Daraz, Pranavkumar Pathak   +8 more
doaj   +1 more source

Radar Sensor Networks: Algorithms for Waveform Design and Diversity with Application to ATR with Delay-Doppler Uncertainty

EURASIP Journal on Wireless Communications and Networking, 2007
Automatic target recognition (ATR) in target search phase is very challenging because the target range and mobility are not yet perfectly known, which results in delay-Doppler uncertainty.
Qilian Liang
doaj   +2 more sources

Parameter estimation for sparse targets in phased-MIMO radar

The Journal of Engineering, 2019
Parameter estimation using phased-multiple-input multiple-output (MIMO) radar is investigated in this study, where transmitting antennas are partitioned into subarrays to provide both waveform diversity and high coherent processing gain.
Can Zhu, Ning Zhang, Zhimin Chen, Peng Chen   +3 more
doaj   +1 more source