Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar
Quasi-continuous wave radar is an attempt to give consideration to the performance of pulse and continuous wave radar signals. However, it also has the shortcomings of both. This paper aims to add a new quasi-continuous-wave coding method to the spaceborne synthetic aperture radar (SAR) system. The...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/16/2/348 |
| _version_ | 1797342578836766720 |
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| author | Weizheng Shao Tao Lai Haifeng Huang Qingsong Wang Peng Shen |
| author_facet | Weizheng Shao Tao Lai Haifeng Huang Qingsong Wang Peng Shen |
| author_sort | Weizheng Shao |
| collection | DOAJ |
| description | Quasi-continuous wave radar is an attempt to give consideration to the performance of pulse and continuous wave radar signals. However, it also has the shortcomings of both. This paper aims to add a new quasi-continuous-wave coding method to the spaceborne synthetic aperture radar (SAR) system. The technology of improving spaceborne SAR imaging performance by coding quasi-continuous-wave pulses is studied, and some shortcomings of this algorithm are improved. Firstly, the application of quasi-continuous-wave radar in the SAR system is studied, and the coding and reconstruction scheme is provided so that this technology can be successfully applied in spaceborne SAR. Secondly, the effects of different quasi-continuous-wave coding methods on SAR imaging performance are evaluated, including signal-to-noise ratio, resolution, and integration time. Then, several coding schemes are given, and the characteristic changes of the signal after quasi-continuous-wave coding are analyzed. The transmit–receive conversion loss function and azimuth Doppler ambiguity function of the design scheme are analyzed, which proves the advantages of the scheme. Finally, we design the hardware implementation scheme and carry out the practical test. |
| first_indexed | 2024-03-08T10:35:18Z |
| format | Article |
| id | doaj.art-4902a7a3e2ed4deb851d1ab11ffc71fd |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-08T10:35:18Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-4902a7a3e2ed4deb851d1ab11ffc71fd2024-01-26T18:18:55ZengMDPI AGRemote Sensing2072-42922024-01-0116234810.3390/rs16020348Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture RadarWeizheng Shao0Tao Lai1Haifeng Huang2Qingsong Wang3Peng Shen4School of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaQuasi-continuous wave radar is an attempt to give consideration to the performance of pulse and continuous wave radar signals. However, it also has the shortcomings of both. This paper aims to add a new quasi-continuous-wave coding method to the spaceborne synthetic aperture radar (SAR) system. The technology of improving spaceborne SAR imaging performance by coding quasi-continuous-wave pulses is studied, and some shortcomings of this algorithm are improved. Firstly, the application of quasi-continuous-wave radar in the SAR system is studied, and the coding and reconstruction scheme is provided so that this technology can be successfully applied in spaceborne SAR. Secondly, the effects of different quasi-continuous-wave coding methods on SAR imaging performance are evaluated, including signal-to-noise ratio, resolution, and integration time. Then, several coding schemes are given, and the characteristic changes of the signal after quasi-continuous-wave coding are analyzed. The transmit–receive conversion loss function and azimuth Doppler ambiguity function of the design scheme are analyzed, which proves the advantages of the scheme. Finally, we design the hardware implementation scheme and carry out the practical test.https://www.mdpi.com/2072-4292/16/2/348synthetic aperture radar (SAR)quasi-continuous-wave radarsignal-to-noise ratio (SNR) |
| spellingShingle | Weizheng Shao Tao Lai Haifeng Huang Qingsong Wang Peng Shen Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar Remote Sensing synthetic aperture radar (SAR) quasi-continuous-wave radar signal-to-noise ratio (SNR) |
| title | Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar |
| title_full | Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar |
| title_fullStr | Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar |
| title_full_unstemmed | Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar |
| title_short | Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar |
| title_sort | application of quasi continuous waveform coding in spaceborne synthetic aperture radar |
| topic | synthetic aperture radar (SAR) quasi-continuous-wave radar signal-to-noise ratio (SNR) |
| url | https://www.mdpi.com/2072-4292/16/2/348 |
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