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A New Multi-beam Amplitude-Comparison Direction Finding Algorithm based on Gaussian Slope Correction

Target radar direction finding is a very important part of electronic countermeasures (ECM). Multi-beam amplitude-comparison direction finding (DF) method is commonly used in radar DF. Traditional algorithms like two-beam algorithm and three beam algorithm are effective ways to achieve amplitude-comparison DF. This paper compares the advantages and disadvantages of the traditional algorithms, gives a new optimization algorithm which is based on radar pattern Gaussian slope correction. The simulation and test results show that the algorithm is effective, and it is more accurate than traditional algorithms. The algorithm has a good application prospect in ECM, especially in airborne ECM systems.