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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 江簡富 | zh_TW |
| dc.contributor.advisor | Jean-Fu Kiang | en |
| dc.contributor.author | 辛佳亮 | zh_TW |
| dc.contributor.author | Chia-Liang Hsin | en |
| dc.date.accessioned | 2023-08-15T16:42:11Z | - |
| dc.date.available | 2023-11-09 | - |
| dc.date.copyright | 2023-08-15 | - |
| dc.date.issued | 2023 | - |
| dc.date.submitted | 2023-07-29 | - |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/88528 | - |
| dc.description.abstract | 本論文提出一種新型 FH-LFM-FD-MIMO 雷達系統來檢測和定位真實目標，同時抑制虛假目標干擾信號。由發射陣列發射經過載波頻率優化的線性調頻 (LFM) 脈衝，來實現頻率分集多輸入多輸出（FD-MIMO）和跳頻（FH）方法。結合粒子群優化（PSO）算法和排序值（ROV）映射來生成頻率分集 (FD) 碼，以增強干擾抑制性能為目標，再依據頻率分集 (FD) 碼設定所有發射陣列單元的頻率偏移。應用特定的FD碼來實現跳頻（FH）方法，脈衝重複間隔可抑制頻域和空間域中的干擾信號，接收器檢測到具匹配 FD 代碼的目標回波，同時抑制具不匹配FD碼的假目標干擾信號。再使用第二種 PSO 算法優化聚焦範圍波束形成向量，以實現低旁瓣的聚焦響應。檢測到目標後，應用二維最小方差無失真響應（2D-MVDR）以更精確地定位目標。提出一種二元積分檢測方法來增強嚴重干擾條件下的檢測性能。模擬結果驗證了所提出的FH-LFM-FD-MIMO雷達系統與傳統方法相比可以將輸出信號干擾加噪聲比（SJNR）提高20 dB以上，在給定誤報率下獲得更高的檢測機率，並提高定位精確度。 | zh_TW |
| dc.description.abstract | A novel FH-LFM-FD-MIMO radar system is proposed to detect and localize true targets while suppressing false-target jamming signals. Linear frequency modulated (LFM) pulses are transmitted by a transmit array, with the carrier frequencies optimized to implement frequency-diverse multiple-input-multiple-output (FD-MIMO) and frequency-hopping (FH) schemes. The frequency offsets at all the transmit-array elements are represented as a frequency-diverse (FD) code, which is generated by combining a particle swarm optimization (PSO) algorithm and a rank-order-value (ROV) mapping to enhance the jamming suppression performance. The frequency-hopping (FH) scheme is implemented by applying specific FD codes in different pulse repetition intervals to suppress jamming signals in both frequency domain and spatial domain. The target echoes carrying matched FD code are detected at the receiver, while the false-target jamming signals carrying mismatched FD codes are suppressed. A spotlight response with low sidelobe level is achieved by optimizing the spotlight-range beamforming vector with a second PSO algorithm. After a target is detected, a two-dimensional minimum-variance distortionless response (2D-MVDR) is applied to pinpoint the target with higher precision. A binary integration detection scheme is proposed to enhance the detection performance under more severe jamming condition. The simulation results verify that the proposed FH-LFM-FD-MIMO radar system can increase the output signal-to-jamming-plus-noise ratio (SJNR) by more than 20 dB compared to conventional approaches, acquiring higher probability of detection under constant false alarm rate and enhancing the localization precision. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-08-15T16:42:11Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2023-08-15T16:42:11Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | Acknowledgement i
中文摘要 ii Abstract iii Table of Contents v List of Figures vii 1 Introduction 1 2 Signal Model 12 3 Design of FD Codebook 21 4 Beamforming Spotlight Response 26 5 Target Detection and Localization 31 5.1 Target Detection 33 5.2 Target Localization 41 6 Simulations and Discussions 47 6.1 Highlight of Contributions 52 7 Conclusions 54 Bibliography 55 | - |
| dc.language.iso | en | - |
| dc.subject | 虛假目標干擾 | zh_TW |
| dc.subject | 偵測 | zh_TW |
| dc.subject | 跳頻 | zh_TW |
| dc.subject | 線性調頻脈衝 | zh_TW |
| dc.subject | 頻率分集多輸入多輸出 | zh_TW |
| dc.subject | 定位 | zh_TW |
| dc.subject | 聚焦響應 | zh_TW |
| dc.subject | localization | en |
| dc.subject | Frequency-hopping | en |
| dc.subject | linear frequency modulated (LFM) pulse | en |
| dc.subject | frequency-diverse multiple-multiple-output (FD-MIMO) | en |
| dc.subject | false target jamming | en |
| dc.subject | spotlight response | en |
| dc.subject | detection | en |
| dc.title | 跳頻及頻域分集多輸入多輸出雷達於假目標干擾下之目標偵測和定位 | zh_TW |
| dc.title | Frequency-Hopping Frequency-Diverse MIMO Radar for Target Detection and Localization under False-Target Jamming | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 111-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 丁建均;李翔傑 | zh_TW |
| dc.contributor.oralexamcommittee | Jian-jiun Ding;Hsiang-Chieh Lee | en |
| dc.subject.keyword | 跳頻,線性調頻脈衝,頻率分集多輸入多輸出,虛假目標干擾,聚焦響應,偵測,定位, | zh_TW |
| dc.subject.keyword | Frequency-hopping,linear frequency modulated (LFM) pulse,frequency-diverse multiple-multiple-output (FD-MIMO),false target jamming,spotlight response,detection,localization, | en |
| dc.relation.page | 70 | - |
| dc.identifier.doi | 10.6342/NTU202302364 | - |
| dc.rights.note | 同意授權(全球公開) | - |
| dc.date.accepted | 2023-08-01 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 電信工程學研究所 | - |
| 顯示於系所單位： | 電信工程學研究所 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-111-2.pdf | 2.43 MB | Adobe PDF | 檢視/開啟 |
系統中的文件，除了特別指名其著作權條款之外，均受到著作權保護，並且保留所有的權利。