Abstract: There is provided herein a visible light-based speed estimation method ViLDAR. By using the received light intensity of a vehicle's LED headlight, the vehicle speed can be accurately estimated for a wide range of incidence angle. Linear LS method is used in one embodiment of a speed estimation algorithm. The impact of system parameters on speed estimation error and the performance of algorithm for different speed and estimation duration are provided. Some embodiments operate best at a certain distances where the received light intensity (power) reading can provide estimation results with high accuracy, which distances are termed a reliable region of operation. In addition to speed estimation, potential applications of ViLDAR idea are ranging detection and collision avoidance for autonomous vehicles.

Abstract: A nanoplasmonic device includes a nanoplasmonicly heatable layer having a heating side and a cooling side, the heatable layer including a plurality of localized energy receiving sites; and a cooling structure located adjacent to the cooling side, the cooling structure including a nanoscale structure to remove heat from the heated layer.