US 12,405,369 B2
Radar imaging method, and radar implementing such a method
Pascal Cornic, Brest (FR); Renan Le Gall, Brest (FR); Rodolphe Cottron, Merignac (FR); and Yoan Veyrac, Merignac (FR)
Assigned to THALES, Courbevoie (FR)
Appl. No. 17/762,370
Filed by THALES, Courbevoie (FR)
PCT Filed Sep. 24, 2020, PCT No. PCT/EP2020/076774
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/058674, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 1910613 (FR), filed on Sep. 26, 2019.
Prior Publication US 2022/0390592 A1, Dec. 8, 2022
Int. Cl. G01S 13/89 (2006.01); G01S 13/02 (2006.01)
CPC G01S 13/89 (2013.01) [G01S 2013/0254 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A radar imaging method using an active antenna comprising N transmission channels and M reception channels, transmitting in bursts of pointing cycles, characterized in that said antenna covering a given angular range during a detection time unit of duration T, said time unit corresponds to a burst in which the N transmission channels are focused successively in a number De of pointing directions (di) such that:
the pointing direction in transmission is modified from recurrence to recurrence;
each time unit of duration T comprising a periodic repetition of a number C of identical pointing cycles, each of these cycles comprising a number P of recurrences, the set of these P recurrences covers all the De pointing directions;
at least one beam is formed in reception on each recurrence in a direction included in the angular range focused in transmission in the pointing direction corresponding to said recurrence,
the set of C cycles constituting a detection block of duration T.