N-Pulse Logic Peak Detection for Laser Radar Range Measurement of Distributed Range Targets

In this report N-pulse detection logic is discussed in the context of high angular resolution laser radar range processing. In the event that a resolved target is obscured by one or more unresolved scatterers such as wires, tree branches, camouflage netting, antennas, and the like, one sees multiple...

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Bibliographic Details
Main Author: Fluckiger, David U
Format: Report
Language:English
Subjects:
Active & Passive Radar Detection & Equipment
ANTENNAS
DISTRIBUTION
LASERS
Lasers and Masers
LINE OF SIGHT
MEASUREMENT
OPTICAL RADAR
PATHS
PE62702E
RANGE(DISTANCE)
SCATTERING
TARGETS
TREES
VARIATIONS
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Summary:In this report N-pulse detection logic is discussed in the context of high angular resolution laser radar range processing. In the event that a resolved target is obscured by one or more unresolved scatterers such as wires, tree branches, camouflage netting, antennas, and the like, one sees multiple returns in the range I.F. due to the multiple scatterers in the line-of-sight path to the target. A laser radar that peak detects the N largest pulses in the range I.F. utilizes N-pulse peak detection logic. This report contains a discussion of the utility of N-pulse logic and also samples of data of N-pulse returns from trees and wires. A limit is found for the average resolvable distance between two scatterers based on Gaussian pulse shapes but not taking into account noise and target fluctuations (speckle).