Nanyang Technological University

Massachusetts Institute of Technology

Danwei Wang

Emilio Frazzoli

Tichakorn Wongpiromsarn

Yu Wang

Tawit Uthaicharoenpong

Ehsan Mihankhah

There is provided an optical remote sensing system including: an emission channel mount having mounted thereto input ends of an array of emission fiber channels; a beam steering device configured to scan a light beam from a light source across the input ends of the array of emission fiber channels; a plurality of sensor portions, each sensor portion configured to be exposed to a corresponding scene and having connected thereto: an output end of a corresponding emission fiber channel of the array of emission fiber channels; and an input end of a corresponding first collection fiber channel of an array of first collection fiber channels; a first photodetector arranged to detect the backscattered light beams that propagated through the array of first collection fiber channels for sensing a property with respect to the corresponding scenes associated with the plurality of sensor portions; and a fiber channel hub configured for the array of emission fiber channels and the array of first collection fiber channels to pass through. There are also provided corresponding methods of optical remote sensing and a corresponding method of forming the optical remote sensing system.

Optical remote sensing

A distributed traffic signal control method is provided for a directed network comprising a plurality of junctions, each junction having a plurality of links connected thereto, the links comprising one or more upstream links and one or more downstream links, the method comprising: activating one of a plurality of phases of the junction for a predetermined time period which maximizes the directed network throughput based on current differential traffic backlogs between said one or more upstream links and said one or more downstream links, each phase providing a unique combination of traffic signals at the junction for guiding traffic from the upstream link(s) to the downstream link(s). There is also provided a corresponding traffic signal controller, a traffic control system comprising the traffic signal controller, and a computer readable medium having stored therein computer executable codes for instructing a computer processor to execute the distributed traffic signal control method.

Traffic signal control method and traffic signal controller

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Singapore, Singapore

Danwei Wang