Abstract:It is a typical passive ranging technology that estimation of distance of an object is based on transmission characteristic of infrared radiation, it is also a hotspot in electro-optic countermeasures. Because of avoiding transmitting energy in the detection, this ranging technology will significantly enhance the penetration capability and infrared conceal capability of the missiles or unmanned aerial vehicles. With the current situation in existing passive ranging system, for overcoming the shortage in ranging an oncoming target object with small temperature difference from background, an improved distance estimation scheme was proposed. This article begins with introducing the concept of signal transfer function, makes clear the working curve of current algorithm, and points out that the estimated distance is not unique due to inherent nonlinearity of the working curve. A new distance calculation algorithm was obtained through nonlinear correction technique. It is a ranging formula by using sensing information at 3~5 and 8~12 μm combined with background temperature and field meteorological conditions. The authors’ study has shown that the ranging error could be mainly kept around the level of 10% under the condition of the target and background apparent temperature difference equal to ±5 K, and the error in estimating background temperature is no more than ±5 K.
付小宁,王 洁,杨 琳 . 基于红外光谱分析的小温差物体距离估计 [J]. 光谱学与光谱分析, 2013, 33(01): 51-54.
FU Xiao-ning, WANG Jie, YANG Lin . IR Spectral-Analysis-Based Range Estimation for an Object with Small Temperature Difference from Background . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(01): 51-54.
[1] LIU Jing-jiao(刘京郊). Technology and System of Electrooptical Warfare(光电对抗技术与系统). Beijing: China Science and Technology Press(北京:中国科学技术出版社), 2004. [2] Hanson M, Tibbetts K, Wohlers R, et al. Proceeding of IEEE Aerospace, BIG SKY, Montana, Mar. 18-25, 2000, 3: 315. [3] Hawks M R, Perram G P. Conference on Targets and Background XI– Characterization and Representation. Orlando, Mar. 28-29, 2005. 112. [4] Anderson J R, Hawks M R, Gross K C, et al. Conference on Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications VIII. Orlando, Apr. 27-28, 2011. 802005. [5] Vincent R Anthony, Hawks M R. Conference on Acquisition, Tracking, Pointing, and Laser Systems Technologies XXV. Orlando, Apr. 25-26, 2011. 80520D. [6] Holst G C, Krapels K A, Conference on Infrared Imaging Systems- Design, Analysis, Modeling, and Testing XXII. Orlando, Apr. 26-28, 2011. 801409. [7] Joseph W, Inter. Patent, WO 055643, 2000. [8] FU Xiao-ning, WANG Bing-jian, WANG Di(付小宁,王炳健,王 荻). Electro-Optic Ranging & Countermeasure(光电定位与光电对抗). Beijing:Publishing House of Electronic Industry(北京:电子工业出版社), 2012. [9] Dahlberg A G M, Holmgren O. Conference on Infrared Imaging Systems – Design, Analysis, Modeling, and Testing XVI. Orlando, Mar. 30, 2005. 81. [10] JIN Yufeng, YU Xiaomei, ZHENG Yongjun. 4th International Symposium on Photoelectronic Detection and Imaging (ISPDI) – Sensor and Micromachined Optical Device Technologies. Beijing, May 24-26, 2011. 819102. [11] Zamora D, Blanco M. Analytica Chimica Acta, 2012, 726: 50. [12] YAO Wen-qing, ZONG Rui-long, ZHU Yong-fa(姚文清,宗瑞隆,朱永法). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2011, 31(8): 2274. [13] SONG Sufang, DUAN Zihua, DUAN Ruyuan, et al. 7th International Symposium on Test Measurement. Beijing, Aug. 05-08, 2007. 5120. [14] Shiraishi Yasuhiro, Miyamoto Ryo, Hirai Takayuki. Organic Letters, 2009, 11(7): 1571. [15] Gerald C H. Electro-optical Imaging System Performance. JCD Publishing, 2008. 502.