Acquisition algorithm for direct-detection ladars with Geiger-mode avalanche photodiodes.
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.
Milstein
Adam B
AB
MIT Lincoln Laboratory, Lexington, Massachusetts 02420, USA. milstein@ll.mit.edu
Jiang
Leaf A
LA
Luu
Jane X
JX
Hines
Eric L
EL
Schultz
Kenneth I
KI