| 摘要 |
PROBLEM TO BE SOLVED: To generate an image close to a true target shape or size even when the relative speeds of a radar and each of a plurality of reflection points of a target are different.SOLUTION: Provided is a radar signal processing method based on an ISAR scheme, wherein the processing method generates a beam of each of mono-pulse outputs Σ, ΔAZ, and ΔEL from the received signal of a real aperture antenna, and produces sampling output; generates a range-Doppler image on a range-Doppler frequency axis from the sampling output of the beam of each of Σ, ΔAZ, and ΔEL; extracts a prescribed target image from among the range-Doppler images of the Σ beam; and calculates, as to the extracted target image, the position of a Doppler-range cell of the target image on the basis of a range by the Σ beam and a mono-pulse measured angle value by the beam of each of Σ, ΔAZ, and ΔEL, and obtains a target image.SELECTED DRAWING: Figure 1 |
