Target angle estimator for search radars
US6201496A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1981 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Jan 12, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A search radar including the improvement of apparatus for enhancing the estimation of the target angle within a search scan of the radar is disclosed. More specifically, the improvement apparatus utilizes the generated scan angles and target amplitude measurements correspondingly associated therewith to generate intermediate signals which are representative of the natural logarithm of the target amplitude measurements plus the square of the corresponding scan angle multiplied by a predetermined constant. For each search scan, the apparatus computes separately signals representative of the moments of: the scan angles, the squares of the scan angles, the products of the scan angles and corresponding intermediate signals, and the intermediate signals. In turn, the apparatus operates on the computed moment representative signals in some prespecified mathematical relationship to effect an optimum estimation for the target angle in each search scan of the radar. Simulated test results of the operation of the disclosed apparatus indicate an improvement over the simple centroid method of target angle estimation especially under the adverse conditions of a scintillating target with Rayleigh…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.