PROCEEDINGS ARTICLE | May 4, 2007
Proc. SPIE. 6550, Laser Radar Technology and Applications XII
KEYWORDS: Target detection, Radar, Transmitters, Cameras, LIDAR, Sensors, Receivers, Surveillance, Computer intrusion detection, Network architectures
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.
