Passive Radar based on the Specific Sequence of Wireless Network

Zhao, Qian and Zhao, Hui (2020) Passive Radar based on the Specific Sequence of Wireless Network. In: Mobimedia 2020, 27-28 August 2020, Cyberspace.

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Passive radar locates the UAV target by processing the reflected signal from non-collaborative illuminators of opportunity (IOs). It will inevitably be affected by the direct-path interference and multipath interference. The conventional passive radar uses the reference channel to receive the direct-path signal as the reference signal for interference cancellation, which is complicated in hardware and susceptible to noise. However, most of the wireless signals carry the prior information used for synchronization or channel estimation, such as the preamble of WiFi signal or the CRS of LTE signal. This paper presents a passive radar system based on the specific sequence in the wireless network, which is the prior information of IOs. Firstly, we analyze the ambiguity function of several typical specific sequences and prove their feasibility as the reference signal. Then we adopt a coherent approach for interference cancellation. The system availability is proved by simulation. A 9.64 dB reduction of interference is observed.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: unmanned aerial vehicles (uavs) localization interference cancellation passive radar wireless network
Subjects: T Technology > T Technology (General)
Depositing User: EAI Editor I.
Date Deposited: 04 Feb 2021 14:25
Last Modified: 04 Feb 2021 14:25

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