Verfahren und System zur Einzelziel-Ankunftsrichtungsabschätzung für Radarsysteme mit Verdünnten Arrays

Details

Veröffentlichungs-Nr.

EP4053592

Aktenzeichen

EP22157388

Anmeldetag

18. Februar 2022

Veröffentlichung

7. Januar 2026

Erteilung

7. Januar 2026

Rechtsraum

EP

IPC

G01S13/42G01S13/87G01S13/931G01S13/00// G01S3/48

Abstract

A mechanism is provided for determining an unambiguous direction of arrival (DoA) for radio frequency (RF) signals received by a sparse array. A DoA angle domain is split into hypothesis regions. The hypothesis regions are derived from the phase differences of the antenna element pairs used for the DoA angle estimate. In each hypothesis region, the ambiguous phase of antenna element pairs is unwrapped according to expected wrap-around. After unwrapping the phase, for each hypothesis region, a phasor is calculated by combining the individual antenna element pair phasors. The hypothesis region that obtains the phasor with a largest amplitude is selected as the most likely DoA region and the phase of the winning phasor is used as an unambiguous estimate for the DoA angle.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete