Simulated test method of synthetic aperture radar (SAR)

Abstract

The invention provides a simulated test method of an SAR. According to the method, the SAR to be tested is fixed on the ground to work, space observation is carried out, a target flies an observation area of the SAR in set parameters and manner in the air cooperatively, the flight track and attitude of the target can be observed, measurement is carried out synchronous with work of the SAR, and measurement parameters are recorded at the same time. According the method, simulated test for the SAR is realized by approaching practical flight condition of the SAR as possible, the cost and risk of SAR test are reduced greatly, and the simulated test method is especially suitable for testing SAR systems in which real trial flight of a missile-borne or spaceborne SAR cannot be realized.

Description

technical field [0001] The present invention generally relates to the technical field of synthetic aperture radar radar testing, in particular to a synthetic aperture radar simulation testing method. Background technique [0002] Synthetic aperture radar is a high-resolution imaging radar, and its concept can be traced back to the early 1950s. In June 1951, Carl Wiley of Goodyear Aerospace Company in the United States first proposed the idea that the angular resolution of radar could be improved by using frequency analysis method. At the same time, the Control Systems Laboratory at the University of Illinois in the United States also independently carried out experiments with incoherent radar data. Not only proved the concept of "Doppler beam sharpening" through experiments, but also proved the principle of synthetic aperture radar theoretically, and successfully developed the first coherent X-band radar system in 1953, and obtained non-focusing SAR for the first time imag...

AI Technical Summary

Problems solved by technology

[0009] However, for SAR systems such as space-borne SAR and missile-borne SAR, the target platform is one-time, so it is impossible to conduct system testing on the target platform. The flight characteristics of other aircraft platforms are very different from the target platform, which affects The effect of system testing

In addition, no matter whether other aircraft platforms or target platforms are used for flight test tests, flight tests will bring huge expenses in terms of funds, manpower, and time, which will affect system development

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