Observability and estimability of passive radar with unknown illuminator states using different observations

doi:10.23919/JSEE.2020.000092

Journal of Systems Engineering and Electronics ›› 2020, Vol. 31 ›› Issue (6): 1193-1205.doi: 10.23919/JSEE.2020.000092

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles Next Articles

Observability and estimability of passive radar with unknown illuminator states using different observations

Tong JING(), Wei TIAN*(), Gaoming HUANG(), Huafu PENG()

¹ College of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China

Received:2019-09-23 Online:2020-12-18 Published:2020-12-29
Contact: Wei TIAN E-mail:jingtong2018@yeah.net;tianwei09@tsinghua.org.cn;hgaom@163.com;huaf_peng@163.com
About author:|JING Tong was born in 1995. He received his B.S. degree in information countermeasure from Naval University of Engineering, Wuhan, China in 2017. He is currently pursuing his Ph.D. degree in communication and information system at Naval University of Engineering. His research interests are passive detection, passive coherent location, and signal processing. E-mail: jingtong2018@yeah.net||TIAN Wei was born in 1984. He received his B.E. degree in communication engineering from Harbin Engineering University, China, in 2007, and Ph.D. degree in information and communication engineering from Tsinghua University, China, in 2014. He is now a postdoctor in the College of Electronic Engieering, Naval University of Engineering, China. His research interests include information fusion, radar signal processing and radar electronic warfare. E-mail: tianwei09@tsinghua.org.cn||HUANG Gaoming was born in 1972. He received his B.S. and M.E. degrees in electronic warfare from Naval Electronic College of Engineering, China, in 1995 and 1998, respectively, and Ph.D. degree in signal processing from Southeast University, Nanjing, China, in 2006. He is currently the chief professor in Naval University of Engineering. His research interests are passive detection, intelligent signal processing, and electronic warfare system simulation. E-mail: hgaom@163.com||PENG Huafu was born in 1987. He received his B.S. degree in electronic engineering and M.S. degree in information and communication engineering from Information Engineering University, Zhengzhou, China, in 2008 and 2013, respectively. He is currently pursuing his Ph.D. degree in mechanical engineering at Naval University of Engineering. His research interests are information fusion and communication signal processing. E-mail: huaf_peng@163.com
Supported by:
This work was supported by the National Natural Science Foundation of China (61803379) and the China Postdoctoral Science Foundation (2017M613370; 2018T111129)

Abstract

Abstract:

Most existing studies about passive radar systems are based on the already known illuminator of opportunity (IO) states. However, in practice, the receiver generally has little knowledge about the IO states. Little research has studied this problem. This paper analyzes the observability and estimability for passive radar systems with unknown IO states under three typical scenarios. Besides, the directions of high and low estimability with respect to various states are given. Moreover, two types of observations are taken into account. The effects of different observations on both observability and estimability are well analyzed. For the observability test, linear and nonlinear methods are considered, which proves that both tests are applicable to the system. Numerical simulations confirm the correctness of the theoretical analysis.

Key words: passive radar, passive coherent location (PCL), observability, estimability, unknown illuminator states

Tong JING, Wei TIAN, Gaoming HUANG, Huafu PENG. Observability and estimability of passive radar with unknown illuminator states using different observations[J]. Journal of Systems Engineering and Electronics, 2020, 31(6): 1193-1205.

Figures/Tables 5

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Parameter	Value
${{X}}_t (0) $	$[52~000,30~000, - 50\sqrt 2 ,50\sqrt 2 ]^{\rm{T}}$
${{X}}_{g_1 } (0)$	$[45~000, - 10~000, - 40, - 40\sqrt 3 ]^{\rm{T}}$
${{X}}_{g_2 } (0)$	$[60~000, - 20~000, - 40,40\sqrt 3 ]^{\rm{T}}$
${{X}}_r (0) $	$[15~000,18~000, - 100, - 100]^{\rm{T}}$
${{P}}_t (0) $	${\rm{diag}}[3~000^2,3~000^2,100^2,100^2]$
$\sigma _\alpha / $ rad	0.001
$\sigma _\beta / $ rad	0.001
$\sigma _\alpha / $ Hz	0.001
$\sigma _\rho / $ m	100
$\Delta {{X}}_t (0) $	$[150, - 150,5, - 5]^{\rm{T}}$
$\Delta {{X}}_g (0) $	$[150, - 150,5, - 5]^{\rm{T}}$

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Observability and estimability of passive radar with unknown illuminator states using different observations

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