Abstract: A scanning beam laser range finder and a method are provided for detecting an intrusion into a protected area by enhancing the capability of detecting an intruded attempting to blend with the area background. The laser range finder and method include an Emitter/Receiver configured to emit laser pulses towards each point out of the plurality of points and to receive therefrom reflected laser pulses. Further included is a processor coupled to the Emitter/Receiver and configured to derive an initial distance separating the laser range finder away from each point, the initial distance having an initial measurement error. At least one amplitude comparator is coupled to the Emitter/Receiver and to the processor, which is configured to derive a corrected distance to each point, the corrected distance having a corrected measurement error smaller than the initial measurement error.

Abstract: A scanning beam laser range finder and a method are provided for detecting an intrusion into a protected area by enhancing the capability of detecting an intruded attempting to blend with the area background. The laser range finder and method include an Emitter/Receiver configured to emit laser pulses towards each point out of the plurality of points and to receive therefrom reflected laser pulses. Further included is a processor coupled to the Emitter/Receiver and configured to derive an initial distance separating the laser range finder away from each point, the initial distance having an initial measurement error. At least one amplitude comparator is coupled to the Emitter/Receiver and to the processor, which is configured to derive a corrected distance to each point, the corrected distance having a corrected measurement error smaller than the initial measurement error.