| The ocean area accounts for 70% of the earth’s surface area,and obtaining the surface temperature of seawater has an important impact on marine transportation,military affairs,environmental protection and meteorological reports.The sea surface thermal radiometer uses infrared radiation to collect sea surface radiation data.By analyzing the infrared radiation signal and combining with atmospheric information,the real-time and accurate sea surface temperature is obtained by using the correlation temperature correction algorithm.Based on the research and development project of a domestic ship-borne sea surface thermal radiation instrument jointly developed by the school tutor research group and the cooperative enterprise,this paper upgrades the hardware of the original model product and the operating system software platform,redesigns the sea surface thermal radiation instrument software under the new platform to improve the accuracy and stability of the equipment,and performs functional testing and performance verification on the software.In this paper,firstly,the related knowledge of sea surface temperature inversion is briefly expounded,and the influence of sea surface depth on temperature measurement results and the shortcomings of traditional sea surface temperature measurement methods and sea surface temperature measurement identification methods under atmospheric environment interference are analyzed.Then,the working principle of the sea surface thermal radiometer and the factors affecting the measurement of sea surface temperature are explained,and the weight of the influencing factors is analyzed based on the temperature measurement error of the sea surface thermal radiometer.Finally,the localization scheme of the sea surface thermal radiometer is discussed,and the design,function test and performance verification of the new sea surface thermal radiometer software are completed.The localization scheme of sea surface thermal radiation instrument is mainly carried out from three aspects: motherboard upgrade,operating system upgrade and software optimization design.The first criterion for the selection of motherboard and operating system is localization,and the second is that the performance indexes should be at least as good as the motherboard and operating system of the original sea surface thermal radiation instrument.After comprehensive comparison and study of domestic motherboards and operating systems in the market,the motherboard of SAM-3612 B model and i.MX53 series processors of Shengbo are replaced by Gelian GLM-HEM-IPM motherboards and Loongson 2K1000 industrial-grade processors,and the operating system Red Hat is replaced by neokylin 5.0 operating system.Referring to the functional requirements of the old equipment,the software of the new model of sea surface thermal radiometer is redesigned and optimized in function.By combining with BP neural network,the information processing algorithm is optimized and improved,and the data storage module and equipment fault feedback function are optimized.After the optimization design and implementation of the software,the function test and performance verification of the new type of sea surface thermal radiometer software are carried out.The experimental results show that the resolution of temperature measurement performance of the new type of sea surface thermal radiometer reaches 0.1℃,the accuracy is within 0.5℃,and the standard deviation is within 0.5,which meets the design requirements of temperature measurement error index and the temperature measurement result is better than that of the old type of sea surface thermal radiometer.The software has also passed the third-party test and the quality meets the requirements. |
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