Evaluation of WiFi beacon transmissions for wireless based passive radar

TL;DR: Performance analysis proves that the proposed method can eliminate the false targets caused by side peaks thus improving the detection performance in FM-passive radar.

TL;DR: In this paper, the authors show how the Universal Software Radio Peripheral (USRP) technology, typically used for implementing telecommunication systems, can be used for realizing passive radars.

TL;DR: This work analyzes how well WiFi signals fit into the CS framework, proposes corresponding detection schemes, and shows how detection accuracy is increased and receiver complexity is reduced.

Abstract: Passive radar systems, also referred to as Passive Coherent Location systems (PCL), exploit non-cooperative illuminators of opportunity (IO) in order to detect and track targets. Some of the main advantages of such systems with respect to conventional radars include low cost architectures, low energy requirements, the capability of operating without any spectrum resource allocation and a potentially null probability of intercept. In this paper, we introduce a passive radar demonstrator based on the use of UMTS (Universal Mobile Telecommunications System) signals as a source of opportunity. An overview of the UMTS standard and some preliminary measurements are firstly presented in order to verify the suitability of the UMTS waveform for radar applications. Secondly, a low cost software defined experimental radar system is introduced together with a measurement scenario. Finally, some live data detection results are presented and discussed in order to demonstrate the capability of this passive radar system.

TL;DR: Waveform analysis shows that some of the modulations used within the transmission sequence have suitable properties for target localisation and this technique has a high potential for the basis of a widely available low cost passive surveillance system.

TL;DR: In this paper, practical measurements of transmitted waveforms are reported and used to illustrate their effects on the resulting system design and performance, in particular the self-ambiguity which enables the limits on range and Doppler resolution to be evaluated is computed.