Method for detecting signals in non-Gaussian background clutter
US5694342A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/295
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a method for detecting signals in non-Gaussian background clutter, comprising the steps of: 1) filtering input data to partition Gaussian input data from non-Gaussian input data; 2) estimating the intensity level of the Gaussian input data; 3) determining the probability distributions of the non-Gaussian input data; 4) determining the background noise level of the input data; 5) estimating noise parameters of the input data; 6) estimating the residual intensity of the input data using the noise parameters; 7) determining a detection statistic M from the input data, estimated noise parameters, and the residual intensity of the input data; 8) determining a standard deviation N.sub.i of the detection statistic, M.sub.i ; 9) determining a normalized detection statistic Si, where S.sub.i =M.sub.i /N.sub.i,; 10) determining a maximum value, S.sub.imax of S.sub.i ; 11) determining a mean value S.sub.Mean and standard deviation S.sub.Std dev of all S.sub.i excluding S.sub.imax ; 12) determining a threshold .tau..sub..alpha. of a zero mean unit variance normal distribution corresponding to a predetermined false alarm probability, where .alpha. is a predetermined false…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.