Interface Design And Implement Of Full-Link Simulation Software For Microwave Radiometer

Synthetic aperture microwave radiometer is a new type of remote sensing device for ocean salinity remote sensing,which can improve the spatial resolution of the passive ocean salinity remote sensing effectively in microwave frequency,and has important application value. For better application in ocean salinity remote sensing,of the synthetic aperture radiometer,the emerging measurement equipment,all-link system simulation is an important means of study.The passive microwave remote sensing all-link simulation system,based on the synthetic aperture radiometer,consists of three parts:(1)forward produce generate light temperature scene;(2)radiometer system simulation;(3)salinity parameter inversion. During the design of all-link simulation system, there are one key interface questions between subsystem 1 and 2: For the size-known scene, how to divide it into pixels correctly, according to its angle scope, to ensure that the radiometer can rebuild the more accurate light temperature image.The interface problems can be summed up in the problem of scene division. To solve the problem is the main work of this article. The article shows comprehensive introduction for the principles of ocean salinity remote sensing using synthetic aperture radiometer first. Then the full-link simulation software solutions for ocean salinity remote sensing, based on synthetic aperture radiometer, is described in detail. The software can simulate the complete process of salinity remote sensing from the forward model to the application inversion. On the basis of the introduction for principles and simulation software, the article highlights the implementation principle of the three space partition methods(direction cosine average, area average, and angle average), of scene's light temperature data, and gives simulation instance. Finally, the three space division methods are analyzed relatively through the simulation results of different kinds of scene, confirming the three methods' influence on temperature measurement accuracy. Simulation results show that, when the scene is divided according the direction cosine split method, the radiometer can achieve the highest brightness temperature measurement precision.