Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis
A linear frequency modulation (LFM) signal and its corresponding de-chirp operation are one of the basic methods for wideband radar signal processing, which can reduce the burden of the radar system sampling rate and is more suitable for large-bandwidth signal processing. More importantly, most exis...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/17/13/2124 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849319759150055424 |
|---|---|
| author | Hao Zheng Xiaoxia Zhang Shubin Wang Junkun Yan |
| author_facet | Hao Zheng Xiaoxia Zhang Shubin Wang Junkun Yan |
| author_sort | Hao Zheng |
| collection | DOAJ |
| description | A linear frequency modulation (LFM) signal and its corresponding de-chirp operation are one of the basic methods for wideband radar signal processing, which can reduce the burden of the radar system sampling rate and is more suitable for large-bandwidth signal processing. More importantly, most existing methods against interrupted sampling repeater jamming (ISRJ) are based on time–frequency (TF) or frequency domain analysis of the de-chirped signal. However, the above anti-ISRJ methods cannot be directly applied to multiple-input multiple-output (MIMO) radar with multiple beams, because the angular waveform (AW) in mainlobe directions does not possess the TF properties of the LFM signal. Consequently, this work focuses on the co-optimization of transmit beampattern and AW similarity in wideband MIMO radar systems. Different from the existing works, which only concern the space–frequency pattern of the transmit waveform, we recast the transmit beampattern and AW expressions for wideband MIMO radar in a more compact form. Based on the compact expressions, a co-optimization model of the transmit beampattern and AWs is formulated where the similarity constraint is added to force the AW to share the TF properties of the LFM signal. An algorithm based on the alternating direction method of multipliers (ADMM) framework is proposed to address the aforementioned problem. Numerical simulations show that the optimized waveform can form the desired transmit beampattern and its AWs have similar TF properties and de-chirp results to the LFM signal. |
| format | Article |
| id | doaj-art-1745e806fd2445239ced5c722f07ef87 |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-1745e806fd2445239ced5c722f07ef872025-08-20T03:50:20ZengMDPI AGRemote Sensing2072-42922025-06-011713212410.3390/rs17132124Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform SynthesisHao Zheng0Xiaoxia Zhang1Shubin Wang2Junkun Yan3College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010010, ChinaCollege of Electronic Information Engineering, Inner Mongolia University, Hohhot 010010, ChinaCollege of Electronic Information Engineering, Inner Mongolia University, Hohhot 010010, ChinaNational Key Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, ChinaA linear frequency modulation (LFM) signal and its corresponding de-chirp operation are one of the basic methods for wideband radar signal processing, which can reduce the burden of the radar system sampling rate and is more suitable for large-bandwidth signal processing. More importantly, most existing methods against interrupted sampling repeater jamming (ISRJ) are based on time–frequency (TF) or frequency domain analysis of the de-chirped signal. However, the above anti-ISRJ methods cannot be directly applied to multiple-input multiple-output (MIMO) radar with multiple beams, because the angular waveform (AW) in mainlobe directions does not possess the TF properties of the LFM signal. Consequently, this work focuses on the co-optimization of transmit beampattern and AW similarity in wideband MIMO radar systems. Different from the existing works, which only concern the space–frequency pattern of the transmit waveform, we recast the transmit beampattern and AW expressions for wideband MIMO radar in a more compact form. Based on the compact expressions, a co-optimization model of the transmit beampattern and AWs is formulated where the similarity constraint is added to force the AW to share the TF properties of the LFM signal. An algorithm based on the alternating direction method of multipliers (ADMM) framework is proposed to address the aforementioned problem. Numerical simulations show that the optimized waveform can form the desired transmit beampattern and its AWs have similar TF properties and de-chirp results to the LFM signal.https://www.mdpi.com/2072-4292/17/13/2124wideband MIMO radartransmit beampatternangular waveformde-chirp operation |
| spellingShingle | Hao Zheng Xiaoxia Zhang Shubin Wang Junkun Yan Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis Remote Sensing wideband MIMO radar transmit beampattern angular waveform de-chirp operation |
| title | Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis |
| title_full | Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis |
| title_fullStr | Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis |
| title_full_unstemmed | Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis |
| title_short | Constant Modulus Wideband MIMO Radar Waveform Design for Transmit Beampattern and Angular Waveform Synthesis |
| title_sort | constant modulus wideband mimo radar waveform design for transmit beampattern and angular waveform synthesis |
| topic | wideband MIMO radar transmit beampattern angular waveform de-chirp operation |
| url | https://www.mdpi.com/2072-4292/17/13/2124 |
| work_keys_str_mv | AT haozheng constantmoduluswidebandmimoradarwaveformdesignfortransmitbeampatternandangularwaveformsynthesis AT xiaoxiazhang constantmoduluswidebandmimoradarwaveformdesignfortransmitbeampatternandangularwaveformsynthesis AT shubinwang constantmoduluswidebandmimoradarwaveformdesignfortransmitbeampatternandangularwaveformsynthesis AT junkunyan constantmoduluswidebandmimoradarwaveformdesignfortransmitbeampatternandangularwaveformsynthesis |