Method for tracking a radar target
US5341145A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jan 14, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/4418
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for tracking a radar target the imaginary part of the complex elevation error signal is utilized and the value of the complex elevation error signal is calculated for a plurality of frequencies in a repeated sequence. The value change between the different frequencies is used for determining the position within an unambiguous interval and the values calculated at the zero crossing are utilized as measure of the inclination which in turn is compared with inclinations calculated for zero crossings in a general case, whereby a single-valued (unambiguous) interval and position can be determined and thereby the associated elevation angle or target height can be calculated. The method is specifically useful for tracking at low height where multi-path propagation poses a problem in tracking according to known methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.