Performance testing method and device for synthetic aperture radar imaging algorithm

Abstract

An embodiment of the present invention provides a performance detection method and device for a synthetic aperture radar imaging algorithm. The method includes: calculating the wavenumber domain amplitude spectrum according to the synthetic aperture radar system parameters and the spatial position parameters of the target relative to the radar; Calculate the spatial spectrum of the target by calculating the spatial position parameters and the amplitude spectrum in the wavenumber domain; perform two-dimensional Fourier inverse transform on the spatial spectrum to obtain the standard imaging image; compare the amplitude of the imaging image processed by the imaging algorithm to be detected with the standard imaging image Compared with the phase, the detection result is calculated. This method does not depend on whether the two-dimensional sidelobe of the point target image presents a cross-linear distribution, so it has wide applicability; and the calculation process of the standard imaging map in this method is less computationally intensive than the BP algorithm, so shortening performance testing time.

Description

technical field [0001] The invention relates to the field of data processing, more specifically, to a performance detection method and device of a synthetic aperture radar imaging algorithm. Background technique [0002] SAR (Synthetic Aperture Radar, Synthetic Aperture Radar) uses the movement of the radar platform along the azimuth direction to form a virtual aperture in space to achieve the ability to distinguish the azimuth of the target; to achieve the ability to distinguish the distance to the target by transmitting broadband signals; thus to achieve two-dimensional imaging of the irradiation scene. dimensional high-resolution image generation. SAR is widely used in satellite payloads, aircraft payloads, and ground-based radar systems. It can effectively supplement the performance degradation of visible light sensors in harsh environments or long-distance observation conditions, and achieve effective observation of space and ground objects; At the same time, polarimet...

AI Technical Summary

Problems solved by technology

However, the BP algorithm has a large amount of calculation, which greatly increases the complexity of performance testing and is not convenient.

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