Method and system for calculation and generation of spaceborne SAR wave position oriented to multi-parameter combination

Abstract

The present invention provides a space-borne SAR wave position calculation and generation method and system oriented to multi-parameter combination, including: determining the PRF range, pulse width range, protection width range and observation angle range; Arbitrary combinations of protection widths; the number of arbitrary combinations is used as the total number of cycles, and the multi-core parallel computing method is used to extract the corresponding PRF value, pulse width value and protection width value under any cycle; calculate the front and rear echo times of the interference band of the transmitted signal; Calculate the front and rear echo times of the sub-satellite point signal interference zone; calculate the azimuth ambiguity under the corresponding parameters; calculate the range ambiguity under the corresponding parameters; calculate the system sensitivity under the corresponding parameters; when all the judgments are satisfied, then Retain the PRF value, pulse width value and protection width value, and retain the corresponding azimuth ambiguity, range ambiguity and system sensitivity calculation values; repeat the execution until all calculations and judgments for all working conditions are completed.

Description

Method and system for wave position calculation and generation of spaceborne SAR for multi-parameter combination technical field The present invention relates to synthetic aperture radar satellite overall design technical field, particularly, relate to a kind of multi-parameter oriented Combined spaceborne SAR wave position calculation and generation method and system, more specifically, relates to an efficient multi-parameter combination oriented method and system Spaceborne SAR wave position calculation and generation method and system. Background technique Spaceborne Synthetic Aperture Radar (SAR) is a space-to-Earth observation imaging radar. Compared with optical remote sensing, it has All-weather, all-day, can penetrate certain vegetation advantages, and can conduct global observation, in military, agriculture, ocean, etc. There are broad applications in the field. In the design process of spaceborne SAR system, wave position design is a key step. First, based...

AI Technical Summary

Problems solved by technology

In the conventional wave position design method, the continuous adjustment of the overlap parameter is used as a means of wave position design iteration. Due to the irregularity of the pulse optional area, only the overlap degree is adjusted. First, the complexity of the algorithm design is high; second, the efficiency of the design low; third, it is difficult to obtain the optimal solution

The advantage of the conventional wave position design method is intuitive visualization, but the disadvantage is that the zebra pattern cannot be adjusted in real time due to the determination of the pulse width and guard width, and it requires multiple manual attempts to select the PRF to meet the imaging quality requirements, which is time-consuming and cannot be dynamically adjusted in real time. Adjust zebra plots for multiple wave level parameters available

Images