Design And Application Of Marine Multi-angle Sun Glitter Remote Sensing Simulation System

Inversion sea surface roughness(SSR)from sun glitter(SG)information in optical remote sensing images is an effective method for detecting ocean dynamic parameters such as wind speed of sea surface and underwater topography of shallow sea.At present,the application of multi-angle SG remote sensing detection and the research on SSR quantitative inversion have just started.And the effects of imaging parameters on the results and the problem of finding optimal combination of observational geometry need to be explored through simulation research.Therefore,the design and application of multi-angle SG remote sensing simulation system is of great significance.This paper focuses on the design and application of multi-angle SG remote sensing simulation system,and constructs simulation models of SG imaging and optimal imaging geometry verification based on error transfer.The research focuses on three aspects,including the influence of imaging parameters on multi-angle SG,the optimal imaging geometry control method of remote sensing platform and the development of simulation software system.The main research works of this paper are as follows:(1)Simulation study of SG radiation under different imaging geometries.The formation of solar flares is closely related to some imaging parameters,and studies have shown that solar flares are very sensitive to sensor angles.In this paper,the ASTER(the Advanced Spaceborne Thermal Emission and Reflection Radiometer)sensor is used as the basic reference to simulate the influence of the sensor observation angle on the SG radiation transmission under different environmental parameters and sensor parameters,and then the influence of imaging parameters on multi-angle SG remote sensing is discussed.(2)Verify the optimal imaging geometry of multi-angle SG remote sensing.Due to the sensitivity of the SG to the observation angle,the magnitude and combination of the sensor observation angles have a greater impact on the multi-angle SG remote sensing model.Based on the SG radiation error propagation,this paper constructs an optimal imaging geometry verification simulation model based on multi-angle SG remote sensing,and carries out the inversion of sea surface roughness estimation error under different imaging geometry combinations to evaluate optimal observationgeometry combination.(3)Propose the imaging geometry control method of remote sensing platform.This paper proposes a remote sensing platform control model,which verifies the output results of different sensor angle combinations in the error transfer simulation model according to real-time environmental factors and obtains the optimal imaging geometry by comparison to guide the design of remote sensing platform parameters.Calculating the optimal imaging geometry in multiple dimensions,based on the explicit objective function and relatively easy engineering implementation,a remote sensing platform control method based on particle swarm optimization(PSO)algorithm is proposed.(4)Based on Python development design language,a multi-angle SG remote sensing simulation and an imaging geometric design system based on PSO algorithm are developed using pyqt5.The system can simulate the variation curve of SG radiation intensity under different dimensions,simulate the image of SG radiation intensity,and obtain optimal imaging geometric parameters based on PSO algorithm.