1. Acquisition algorithm for direct-detection ladars with Geiger-mode avalanche photodiodes
- Author
-
Milstein, Adam, Jiang, Leaf A., Luu, Jane X., Hines, Eric L., and Schultz, Kenneth I.
- Subjects
Optical radar -- Design and construction ,Optical radar -- Equipment and supplies ,Algorithms ,Algorithm ,Astronomy ,Physics - Abstract
An optimal algorithm for detecting a target using a ladar system employing Geiger-mode avalanche photodiodes (GAPDs) is presented. The algorithm applies to any scenario where a ranging direct detection ladar is used to determine the presence of a target against a sky background within a specified range window. A complete statistical model of the detection process for GAPDs is presented, including GAPDs that are inactive for a fixed period of time each time they fire. The model is used to develop a constant false alarm rate detection algorithm that minimizes acquisition time. Numerical performance predictions, simulation results, and experimental results are presented. OCIS codes: 040.1345, 280.3400, 040.3780, 280.3640.
- Published
- 2008