The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2019
Filed:
Mar. 12, 2015
Bradar Indústria S.a., São José dos Campos, BR;
João Roberto Moreira Neto, Valinhos, BR;
EMBRAER S.A., São José dos Campos-SP, BR;
Abstract
High precision radar to track aerial targets installed on the ground, in a container or in a vehicle, to determine the target parameters, such as azimuth angle (θ), elevation angle (θ), range, speed and flying direction and transmits them to a weapon system which comprises an array of two collinear antennas () with narrow beam in elevation, installed on a platform () and rotating around a vertical axis at a rotational speed of, at least, 50 rpm, in which the direction of the said array varies between 0° and 90° by means of a positioning motor in elevation (), and the precise target elevation angle (θ) is determined by interferometry. The precise target azimuth angle () is determined through correlation between a signal detected by the said antennas () with a +1/−1 step function, complemented by the search for the zero transition provided by the determination of the return pulse maximum. The target speed and direction values are determined by a prediction filter () based on the history of range, elevation and azimuth values obtained in previous measurements.