| Citation: | GAO Xu, YANG Shuo, CHAI Jianzhong, et al. Improved test method based on vector cancellation for scattering characteristic of discontinuous target[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(7): 1293-1299. doi: 10.13700/j.bh.1001-5965.2016.0517(in Chinese)
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For stealth aircraft, the scattering contribution of discontinuous targets becomes considerable. The common method is based on low scattering carrier and compares measurement results of carrier with discontinuity and that without discontinuity. The scattering increase of target with discontinuity is obtained to analyze its electromagnetic scattering characteristic. This method has disadvantages of low efficiency, small-size target and high cost. An improved method is presented based on vector cancellation, which regards carrier as part of target background and separates carrier scattering from result. The scattering characteristic of discontinuous target in whole angle region which is independent of carrier is obtained, and the result is more integrative and more accurate. By comparing with literature and validation analysis, the vector cancellation method can get scattering characteristic of discontinuous target in whole angle region. The test results and target size are unrelated to carrier, so that this method has advantages of high precision and low cost.
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