Mr. Siva Sai Rajesh Ogirala Profile

Siva Sai Rajesh Ogirala

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Proceedings Article | 4 May 2007 Paper

Multi-static networked 3D ladar for surveillance and access control

Y. Wang, S. S. Ogirala, B. Hu, Han Le

Proceedings Volume 6550, 65500U (2007) https://doi.org/10.1117/12.719381

KEYWORDS: LIDAR, Target detection, Receivers, Surveillance, Radar, Cameras, Transmitters, Network architectures, Sensors, Computer intrusion detection

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A theoretical design and simulation of a 3D ladar system concept for surveillance, intrusion detection, and access control is described. It is a non-conventional system architecture that consists of: i) multi-static configuration with an arbitrarily scalable number of transmitters (Tx's) and receivers (Rx's) that form an optical wireless code-division-multiple-access (CDMA) network, and ii) flexible system architecture with modular plug-and-play components that can be deployed for any facility with arbitrary topology. Affordability is a driving consideration; and a key feature for low cost is an asymmetric use of many inexpensive Rx's in conjunction with fewer Tx's, which are generally more expensive. The Rx's are spatially distributed close to the surveyed area for large coverage, and capable of receiving signals from multiple Tx's with moderate laser power. The system produces sensing information that scales as NxM, where N, M are the number of Tx's and Rx's, as opposed to linear scaling ~N in non-network system. Also, for target positioning, besides laser pointing direction and time-of-flight, the algorithm includes multiple point-of-view image fusion and triangulation for enhanced accuracy, which is not applicable to non-networked monostatic ladars. Simulation and scaled model experiments on some aspects of this concept are discussed.

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