| Citation: | GE Jiaang, XIE Junwei, ZHANG Haowei, et al. Angle deception effect of frequency diversity array on interferometer[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(1): 183-191. doi: 10.13700/j.bh.1001-5965.2018.0191(in Chinese)
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A method of angle deception jamming for interferometer based on frequency diversity array (FDA) is proposed to solve the problem of direction-finding concealment of interferometer. The interferometer determines the angle of arrival by obtaining the phase difference of the signals received by each antenna, and the phase difference does not satisfy the solution relation due to the frequency offset of each element of FDA, so that the angle deception is achieved. This paper proposes two algorithms (FDA model establishment and Euler formula) to establish the FDA signal phase distribution model. It is proved that FDA signal has an angle deception effect on interferometer. Based on the principle of interferometer, the influence of interference distance, interval of array element, emission frequency, frequency offset, etc. is analyzed. The theoretical analysis and simulation results show that FDA has a good deception effect on the interferometer in far field.
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