Abstract：By the synthesis of multi-radar electromagnetic wave space energy, Distributed Aperture Coherence-synthetic Radar (DACR) achieves long-range power detection via multi-radar airspace expansion to realize high-precision target angle measurement. DACR has the advantages of strong survival ability, a high cost-effectiveness ratio, high angular accuracy, strong expandability, and easy realization. In this article, we analyze the joint antenna gain of a non-directional multi-point source and, given the theoretical derivation and simulation analysis, we establish a distributed-array-antenna geometric model, analyze the joint antenna pattern and gain, respectively, and determine that the joint antenna gain is approximately equal to the unit radar number and the unit radar gain product. Lastly, we perform a joint antenna gain simulation using HFSS software to further verify the joint antenna gain results.
Lu Yao-bing, Zhang Lv-qian, Zhou Yin-qing, et al.. Study on distributed aperture coherence-synthetic radar technology[J]. Systems Engineering and Electronics, 2013, 35(8): 1657-1662. DOI:10.3969/j.issn.1001-506X.2013.08.12
[3]
Coutts S, Cuomo K, McHarg J, et al.. Distributed coherent aperture measurements for next generation BMD radar[C]. Proceedings of the Fourth IEEE Workshop on Sensor Array and Multichannel Processing, Waltham, MA, 2006: 390-393.
[4]
Brookner E. Phased-array and radar breakthroughs[C]. Proceedings of 2007 IEEE Radar Conference, Boston, MA, USA, 2007: 37-42.
[5]
Brookner E. Phased-array and radar astounding breakthroughs—An update[C]. Proceedings of IEEE Radar Conference, Rome, Italy, 2008: 1-6.
Cao Zhe, Chai Zhen-hai, Gao Hong-wei, et al.. Technology and tests on distributed aperture coherence-synthesizing radar[J]. Modern Defence Technology, 2012, 40(4): 1-11.
Gao Hong-wei, Cao Zhe, and Lu Yao-bing. Basic study and principle validate of distributed aperture coherence-synthetic radar[C]. Proceedings of the 12th Chinese Radar Conference, Wuhan, China, 2012: 129-134.
[8]
Gao Hong-wei and Zhou Bao-liang. Performance analysis and experimental study on distributed aperture coherence-synthetic radar[C]. 2016 CIE Radar Conference, Guangzhou, China, 2016.
[9]
Stutzman W L and Thiele G A. Antenna Theory and Design[M]. New York: John Wiley & Sons, 1981: 141-145.
Wang Jian, Zheng Yi-nong, and He Zi-yuan. Antenna Array Theory and Engineering Applications[M]. Beijing: Publishing House of Electronics Industry, 2015: 15-18.
2017, Vol. 6 
