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Laser source direction finding under non-uniform illumination conditions

  • US 10,012,531 B2
  • Filed: 10/20/2016
  • Issued: 07/03/2018
  • Est. Priority Date: 10/20/2016
  • Status: Active Grant
First Claim
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1. A sensor array for estimating direction of a laser source, the sensor array comprising:

  • a plurality of sensors, the sensors to detect an amplitude of a received laser signal, wherein each of the plurality of sensors is disposed on the array at a unique orientation angle relative to the other sensors, wherein the plurality of sensors comprises a first plurality of small sensors and a second plurality of larger sensors, and a size of the small sensors is selected based on a speckle pattern of the laser signal such that the sensors are uniformly illuminated by the laser signal, a size of the larger sensors is selected based on sensitivity requirements for detecting the laser signal subjected to scattering effects, and wherein the size of the small sensors refers to a largest dimension of an active sensor area of an individual small sensor which is less than or equal to 0.05 inches, and the size of the larger sensor refers to a largest dimension of active sensor area of an individual larger sensor which is greater than or equal to 0.5 inches.

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