비균일 대기상태를 고려한 함정의 적외선 신호 특성 분석ANALYSIS OF IR SIGNAL CHARACTERISTICS OF A SHIP FOR NON-UNIFORM ATMOSPHERIC CONDITIONS
- Authors
- 최준혁; 김도휘; 한국일; 하남구; 장현성; 이승하; 김동건; 김태국
- Issue Date
- 2017
- Publisher
- 한국전산유체공학회
- Keywords
- 적외선신호; 대기투과도; 적외선센서; 비균일대기; 대기산란성분; IR Signal; Atmospheric transmittance; IR Seeker; Non-uniform Atmosphere; Scattered Component
- Citation
- 한국전산유체공학회지, v.22, no.1, pp 88 - 94
- Pages
- 7
- Journal Title
- 한국전산유체공학회지
- Volume
- 22
- Number
- 1
- Start Page
- 88
- End Page
- 94
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/5929
- DOI
- 10.6112/kscfe.2017.22.1.088
- ISSN
- 1598-6071
- Abstract
- The IR signal entering into a sensor is composed of the following components: the self-emitted component directly from the object surface, the reflected components of the solar and sky irradiance at the object surface, and the scattered component by the atmosphere without reference to any object surfaces. The self-emitted and reflected components from the object can be lowered by the atmospheric layer between the object and the IR sensor. The principle factors influencing the atmospheric transmittance are the air temperature, the relative humidity and the observation distance. Previous studies on IR signal transmission through the atmosphere are focused on uniform atmospheric conditions and the non-uniform nature of the atmosphere was not properly treated in modeling. In this study, we use the local atmospheric transmittance to simulate the non-uniform atmosphere in analyzing the IR signal from the object surface. The results show that the nonuniform analysis of the atmosphere becomes more important as the wavelength of IR signal increases.
The IR signal entering into a sensor is composed of the following components: the self-emitted component directly from the object surface, the reflected components of the solar and sky irradiance at the object surface, and the scattered component by the atmosphere without reference to any object surfaces. The self-emitted and reflected components from the object can be lowered by the atmospheric layer between the object and the IR sensor. The principle factors influencing the atmospheric transmittance are the air temperature, the relative humidity and the observation distance. Previous studies on IR signal transmission through the atmosphere are focused on uniform atmospheric conditions and the non-uniform nature of the atmosphere was not properly treated in modeling. In this study, we use the local atmospheric transmittance to simulate the non-uniform atmosphere in analyzing the IR signal from the object surface. The results show that the nonuniform analysis of the atmosphere becomes more important as the wavelength of IR signal increases.
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