典型地表的发射率获取方法研究

发布时间：2019-01-22 09:25

【摘要】：伴随经济的发展,涉海活动日益增加,海上重大突发事故时有发生,那么对海上遇险目标进行搜寻则尤为重要。由于红外探测技术具有探测能力强、作用距离远、不受光照条件影响等特点,所以在恶劣海况下对遇险目标的搜寻领域得到了广泛应用。研制红外自动搜寻系统时自动搜寻算法对遇险目标的识别起重要作用,自动搜寻算法需要大量不同状况下实拍的红外图像作为测试数据,然而实拍的工作成本高、测试数据有局限性,红外图像仿真是解决这一难题的有效途径,在测试自动搜寻算法中有重要的地位。在红外图像仿真系统中发射率是表征目标表面辐射能力的重要参数,发射率的准确性对仿真效果至关重要。本课题即是对典型地表的发射率获取方法的研究,对红外图像仿真具有重要意义。本文主要从典型地表的发射率数据源获取方法、数据库管理系统的设计与实现和基于发射率数据查询的获取方法三方面进行阐述。发射率的收集采用了三种方法：分别是查阅文献法、测量法和校正法。查阅文献法是通过阅读相关参考文献,收集所提供的发射率等参数的参考值；测量法则利用IR-2双波段发射率测量仪测量典型地表的发射率；校正法是通过循环仿真和数值迭代的方法对发射率进行校正,获得更逼近真实数值的发射率。数据库管理系统主要分为发射率和表面温度等参数录入、查询、修改和删除四个功能模块。该数据库采用SQL Server 2008作为数据库开发工具,在Visual Studio 2008平台下运用MFC设计人机交互界面并采用ADO数据库访问方法,构成了客户机／服务器式体系结构。系统实现后,对整个系统进行了调试,各项功能均得以实现。发射率数据和表面温度包含不同参数条件,查询时根据条件的优先级顺序并结合数据库中数据记录的完备程度,研究物体发射率数据查询和表面温度查询的获取方法。
[Abstract]:With the development of economy, the activities related to the sea are increasing day by day, and serious accidents occur at sea, so it is very important to search for the targets in distress at sea. Because infrared detection technology has the characteristics of strong detection ability, long range and not affected by illumination conditions, it has been widely used in the field of searching distress targets under bad sea conditions. The automatic search algorithm plays an important role in the recognition of targets in distress when the infrared automatic search system is developed. The automatic search algorithm needs a large number of real infrared images taken under different conditions as test data, but the work cost of real shooting is high. The infrared image simulation is an effective way to solve this problem and plays an important role in the test automatic search algorithm. Emissivity is an important parameter in infrared image simulation system, and the accuracy of emissivity is very important to the simulation effect. This topic is to study the emissivity acquisition method of typical surface, which is of great significance to infrared image simulation. In this paper, the emissivity data source acquisition method of typical surface, the design and implementation of database management system and the acquisition method based on emissivity data query are discussed. Three methods are used to collect emissivity: literature review, measurement and correction. The reference value of the parameters such as emissivity is collected by reading the relevant references, and the emissivity of typical surface is measured by IR-2 dual-band emissivity measuring instrument. The emissivity is corrected by cyclic simulation and numerical iteration to obtain emissivity which is closer to the real value. The database management system is divided into four function modules, such as emissivity and surface temperature input, query, modification and deletion. The database uses SQL Server 2008 as the database development tool, uses the MFC to design the man-machine interface under the Visual Studio 2008 platform, and adopts the ADO database access method, which forms the client / server type system structure. After the system is realized, the whole system is debugged and all functions are realized. Emissivity data and surface temperature contain different parameter conditions. According to the priority order of the conditions and the completeness of data records in the database, the acquisition methods of object emissivity data query and surface temperature query are studied.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN215

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