Acta Optica Sinica, Volume. 35, Issue 5, 504001(2015)
Research of Infrared Detectability of Hypersonic Vehicle
Taking hypersonic waverider for example, the infrared detectability of hypersonic object in rarefied atmosphere space is researched. Heat flux distribution of the stagnation point as well as radiation-equilibrium temperature is calculated under different flying conditions with engineering algorithms; then atmospheric transmittance is calculated by summation over small intervals. After considering both effects of radiation difference between object and background, and dispersion on detector′ s operating range, a new model for calculation operating range of infrared detedion system is built. By simulation, dispersion coefficient has varied with distance between object and detector; meanwhile, the higher the velocity of object is, the further the operating range is. When compared with long-wave spectrum, detector working at short-medium spectrum has better operating range. By field test, proposed algorithm has high accuracy when compared with existing models.
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Zhou Jinwei, Li Jicheng, Shi Zhiguang, Chen Xiaotian, Lu Xiaowei. Research of Infrared Detectability of Hypersonic Vehicle[J]. Acta Optica Sinica, 2015, 35(5): 504001
Category: Detectors
Received: Sep. 30, 2014
Accepted: --
Published Online: Apr. 3, 2015
The Author Email: Jinwei Zhou (zhoujinwei863@sina.com.cn)