Integration of sensing and computing in an intelligent decision support system for homeland security defense

Qishi Wu, Mengxia Zhu, Nageswara S.V. Rao

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We propose an intelligent decision support system based on sensor and computer networks that incorporates various component techniques for sensor deployment, data routing, distributed computing, and information fusion. The integrated system is deployed in a distributed environment composed of both wireless sensor networks for data collection and wired computer networks for data processing in support of homeland security defense. We present the system framework and formulate the analytical problems and develop approximate or exact solutions for the subtasks: (i) sensor deployment strategy based on a two-dimensional genetic algorithm to achieve maximum coverage with cost constraints; (ii) data routing scheme to achieve maximum signal strength with minimum path loss, high energy efficiency, and effective fault tolerance; (iii) network mapping method to assign computing modules to network nodes for high-performance distributed data processing; and (iv) binary decision fusion rule that derive threshold bounds to improve system hit rate and false alarm rate. These component solutions are implemented and evaluated through either experiments or simulations in various application scenarios. The extensive results demonstrate that these component solutions imbue the integrated system with the desirable and useful quality of intelligence in decision making.

Original languageEnglish (US)
Pages (from-to)182-200
Number of pages19
JournalPervasive and Mobile Computing
Issue number2
StatePublished - Apr 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Software
  • Information Systems
  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications


  • Data routing
  • Distributed computing
  • Dynamic programming
  • Intelligent decision support system
  • Sensor deployment
  • Sensor fusion


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