Accession Number:

AD0488613

Title:

PROBABILITY OF DETECTION FOR SOME ADDITIONAL FLUCTUATING TARGET CASES

Descriptive Note:

Technical operating rept.

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA EL SEGUNDO TECHNICAL OPERATIONS

Personal Author(s):

• Swerling, Peter

Report Date:

1966-03-01

Pagination or Media Count:

52.0

Abstract:

The chi-square family of signal fluctuation distributions is defined. Rules are given for embedding the Swerling cases, and other cases of interest, in this family. Probability of detection curves are presented for the chi-square family of fluctuations, including cases whose probability of detection curves cannot be bracketed by the Swerling cases and the non-fluctuating case. The work of Weinstock has indicated such cases to be of practical interest the fluctuation loss, for probability of detection exceeding .50, can be much larger than that for Swerling Case I. A discussion and partial analysis, accompanied by examples, is devoted to the question When can the detection probability curves for signal fluctuations, not belonging to the chi-square family be well approximated by curves resulting from chi-square fluctuations and what methods can be used to choose adequately fitting chi-square fluctuation models when such a fit is possible.

Descriptors:

• *TARGET RECOGNITION
• *PROBABILITY
• *RADAR TARGETS
• DETECTION
• CURVE FITTING
• SCINTILLATION
• RADAR CROSS SECTIONS
• STATISTICAL DISTRIBUTIONS

Subject Categories:

• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE