基于分布式雷達的寬帶脈沖三維測距機制及方法研究
doi: 10.11999/JEIT140575 cstr: 32379.14.JEIT140575
-
2.
①北京跟蹤與通信技術(shù)研究所 北京 100094②中國科學(xué)院電子學(xué)研究所 北京 100190③中國航天科技集團公司 北京 100048>
基金項目:
國家自然科學(xué)基金(61471012)和中國博士后科學(xué)基金(2013M542455)資助課題
Research on Mechanisms and Methods in the 3D Measurement with Wide-band Pulse Based on Distributed Radar
-
2.
①Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China②Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China③China Aerospace Science and Technology Corporation, Beijing 100048, China>
-
摘要: 針對脈沖雷達相位測距技術(shù)在相位解模糊和測量機理方面存在的局限性，該文提出一種基于分布式雷達的3維測距機制，建立分布式雷達3維測距信號模型。利用天線空間布局引起的序列相位差代替常規(guī)由序列脈沖累積引起的相位差，結(jié)合微波3維成像處理的基本原理，通過相干積累實現(xiàn)空中觀測目標(biāo)的3維測量和軌跡測量，并利用觀測區(qū)域的目標(biāo)空間稀疏分布特性，給出一種基于CLEAN的寬帶脈沖雷達高精度3維測距方法。仿真驗證和分析結(jié)果表明，該文設(shè)計的分布式雷達3維測距機制和方法不僅較好地避免了高動態(tài)遠距離測量環(huán)境中的相位解模糊問題，而且還能快速獲取觀測目標(biāo)的序列3維圖像和位置信息，有效避免了傳統(tǒng)單站脈沖相位測量體制只能實現(xiàn)1維測距的能力，為雷達測距應(yīng)用提供一種新的方法與技術(shù)支撐。Abstract: Considering the limitations of phase unwrapping and measurement mechanism in the pulsed radar phase ranging technology, a three-dimension (3D) ranging mechanism based on distributed radar is proposed, and the observation matrix model of distributed radar 3D ranging is established. By using the sequential phase difference caused by the distributed antenna layout instead of the phase difference caused by pulse incubation, a distributed wide-band radar (3D) measurement based on observation matrix is implemented, and in?combination?with the target sparse distribution characteristics in the observed area, a wide-band pulse radar carrier measurement by phase based on CLEAN method is suggested. As shown by the simulation and analysis results, the distributed radar phase ranging mechanism and method in this paper not only solve the phase unwrapping problem in high dynamic and long distance measurement environment, but also acquire the three-dimension sequential images and position information of the observed target quickly. This proposed method provides a new technical support for the application of the radar ranging technology.
-
Key words:
- Distributed radar /
- 3D measurement with wide-band pulse /
- 3D imaging /
- CLEAN algorithm
-
計量
- 文章訪問數(shù): 1913
- HTML全文瀏覽量: 170
- PDF下載量: 459
- 被引次數(shù): 0
下載:
