Barrier coverage in bistatic radar sensor networks: Cassini oval sensing and optimal placement

Xiaowen Gong, Junshan Zhang, Douglas Cochran, Kai Xing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations

Abstract

By taking advantage of active sensing using radio waves, radar sensors can offer several advantages over passive sensors. Although much recent attention has been given to multistatic and MIMO radar concepts, little has been paid to understanding the performance of radar networks (i.e., multiple individual radars working in concert). In this context, we study the optimal placement of a bistatic radar (BR) sensor network for barrier coverage. The coverage problem in a bistatic radar network (BRN) is challenging because: 1) in contrast to the disk sensing model of a traditional passive sensor, the sensing region of a BR depends on the locations of both the BR transmitter and receiver, and is characterized by a Cassini oval ; 2) since a BR transmitter (or receiver) can potentially form multiple BRs with different BR transmitters (or receivers, respectively), the sensing regions of different BRs are coupled, making the coverage of a BRN highly non-trivial. This paper considers the problem of deploying a network of BRs in a region for maximizing the worst-case intrusion detectability, which amounts to minimizing the vulnerability of a barrier. We show that the shortest barrier-based placement is optimal if the shortest barrier is also the shortest line segment connecting the region's two boundaries. Based on this observation, we study the optimal placement of the BRs on a line segment for minimizing its vulnerability, which is a non-convex optimization problem. By exploiting some specific structural properties pertaining to the problem (particularly an important structure of detectability), we find the optimal placement order and the optimal placement spacing of the BR nodes, both of which exhibit elegant balanced structures. Our findings give valuable insight for the placement of BRs for barrier coverage. To our best knowledge, this is the first work to explore the coverage of a network of BRs.

Original languageEnglish (US)
Title of host publicationMobiHoc 2013 - Proceedings of the 14th ACM International Symposium on Mobile Ad Hoc Networking and Computing
Pages49-58
Number of pages10
DOIs
StatePublished - Aug 30 2013
Event14th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2013 - Bangalore, India
Duration: Jul 29 2013Aug 1 2013

Publication series

NameProceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

Conference

Conference14th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2013
CountryIndia
CityBangalore
Period7/29/138/1/13

Keywords

  • Barrier Coverage
  • Bistatic Radar Sensor Network
  • Optimal Placement
  • Worst-case Intrusion

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Barrier coverage in bistatic radar sensor networks: Cassini oval sensing and optimal placement'. Together they form a unique fingerprint.

Cite this