| 摘要 |
PROBLEM TO BE SOLVED: To provide a survey method for the arrival direction of a pulse radiation electromagnetic wave, capable of accurately and easily estimating the arrival direction (azimuth angle and elevation angle) of the pulse radiation electromagnetic wave.SOLUTION: A received signal resulting from a pulse radiation electromagnetic wave received by antennas 1A-1D arranged at intersection points of sides of a regular square is sectioned into N sections (N is a natural number) having a common initial point and different length to generate N division signals, an arrival time difference is estimated for each of the sections by a signal processing by an arrival time difference estimation method on the basis of a mutual correlation method including the Fourier transform processing and the inverse Fourier transform processing to which a prescribed weight is applied, an average value of the estimated N arrival time differences is calculated, and the arrival direction of the received signal is estimated on the basis of the average value. |
