Journal of Systems Engineering and Electronics ›› 2019, Vol. 30 ›› Issue (6): 1064-1073.doi: 10.21629/JSEE.2019.06.02

• Electronics Technology • Previous Articles     Next Articles

Photoelectric detection technology of laser seeker signals

Likun ZHU1,2(), Fangxiu JIA1,*(), Xiaodong JIANG1(), Xinglong LI3()   

  1. 1 Minsterial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing 210094, China
    2 CETHIK GROUP CO., LTD, Hangzhou 310012, China
    3 Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2018-06-26 Online:2019-12-20 Published:2019-12-25
  • Contact: Fangxiu JIA E-mail:aaa123@yahoo.cn;jiafangxiu@gmail.com;jxd0204@126.com;lixinglong.sj@163.com
  • About author:ZHU Likun was born in 1991. He is a lecturer in Nanjing University of Science and Technology. His research interests are digital signal processing, parallel heterogeneous computing, weapon guidance and so on. E-mail: aaa123@yahoo.cn|JIA Fangxiu was born in 1980. She is a Ph.D. and a lecturer in Harbin Institute of Technology. Her research interests are design of micro-electromechanical system inertial sensor circuit and inertial measurement unit attitude measurement technology. E-mail: jiafangxiu@gmail.com|JIANG Xiaodong was born in 1994. He is a lecturer in Nanjing University of Science and Technology. His research interest is intelligent ammunition technology. E-mail: jxd0204@126.com|LI Xinglong was born in 1988. He is a Ph.D. and a lecturer in Nanjing University of Science and Technology. His research interest is intelligent ammunition technology. At present, he works in the Institute of Chemical Materials, China Academy of Engineering Physics. E-mail: lixinglong.sj@163.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(61201391);This work was supported by the National Natural Science Foundation of China (61201391)

Abstract:

The measurement of the rolling angle of the projectile is one of the key technologies for the terminal correction projectile. To improve the resolution accuracy of the rolling angle in the laser seeker weapon system, the imaging model of the detector, calculation model of the position and the signal-to-noise ratio (SNR) model of the circuit are built to derive both the correlation between the resolution error of the rolling angle and the spot position, and the relation between the position resolution error and the SNR. Then the influence of each parameter on the SNR is analyzed at large, and the parameters of the circuit are determined. Meanwhile, the SNR and noise voltage of the circuit are calculated according to the SNR model and the decay model of the laser energy. Finally, the actual photoelectric detection circuit is built, whose SNR is measured to be up to 53 dB. It can fully meet the requirement of 0.5° for the resolution error of the rolling angle, thereby realizing the analysis of critical technology for photoelectric detection of laser seeker signals.

Key words: laser seeker, rolling angle, error of position, signal-tonoise ratio (SNR), photoelectric detection