Method for the passive localization of radar transmitters
First Claim
1. A method of passive location of radar transmitters implemented by at least two so-called ESM Electronic Support Measures stations, said radars having a quasi-constant scanning speed in the course of the transit over the set comprising at least two ESM stations, each of said ESM stations being able to intercept the transmission lobes of radar transmitters and to estimate their lobe transit times (LTT) and at least one station being able to estimate the angle of arrival of said transmission lobes, wherein the location of the radar transmitters is performed by testing the intersection between a Lobe Transit Time iso-Difference curve passing through at least the two ESM stations and a sighting straight line passing through the ESM station having measured the angle of arrival and of azimuth equal to said measured angle of arrival.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of passive location of radar transmitters implemented by at least two ESM stations, the radars having a quasi-constant scanning speed in the course of the transit over the set comprising at least two ESM stations, each of the ESM stations being able to intercept the transmission lobes of radar transmitters and to estimate their lobe transit times (LTT) and at least one station being able to estimate the angle of arrival α of the transmission lobes, the location of the radar transmitters being performed by testing the intersection between an iso-LTTD curve passing through at least the two ESM stations and a sighting straight line passing through the ESM station having measured the angle of arrival and of azimuth equal to the measured angle of arrival α.
15 Citations
9 Claims
- 1. A method of passive location of radar transmitters implemented by at least two so-called ESM Electronic Support Measures stations, said radars having a quasi-constant scanning speed in the course of the transit over the set comprising at least two ESM stations, each of said ESM stations being able to intercept the transmission lobes of radar transmitters and to estimate their lobe transit times (LTT) and at least one station being able to estimate the angle of arrival of said transmission lobes, wherein the location of the radar transmitters is performed by testing the intersection between a Lobe Transit Time iso-Difference curve passing through at least the two ESM stations and a sighting straight line passing through the ESM station having measured the angle of arrival and of azimuth equal to said measured angle of arrival.
Specification