Asynchronous, coherent, radar transmitter-receiver system

US11719786B2 · kind B2 · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Kenneth I. Ranney · Rockville, US
• Kyle A. Gallagher · Silver Spring, US
• Daniel T. Galanos · Silver Spring, US
• Abigail S. Hedden · Vienna, US
• Roger P. Cutitta · Westminster, US

Key dates

• Filing date: Feb 11, 2021
• Grant date: Aug 8, 2023
• Expiry date: Jul 5, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/2883
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

According to embodiments, a radar system includes: at least one radio receiver which is comprised of: an antenna configured to receive RF data including both the direct-path RF signal transmitted from a radio transmitter and a reflected RF signal when the transmitted RF signal is reflected from the target; a memory configured to store the same predetermined RF waveform profile data used by the transmitter to generate and transmit the RF signal; a timing unit to provide timing; a matched filter application configured to generate and apply a matched filter for identifying RF signal signatures in RF data; and one or more processors configured to: (i) analyze the received RF data to identify multiple, repeated, individual RF signals corresponding to the direct-path transmitted RF signal; (ii) split the identified RF signals corresponding to the direct-path transmitted RF signal into a plurality of repeating units each having an interval time; (iii) create a matched filter using the predetermined transmit waveform (stored in memory) and apply the matched filter to each of repeating units to provide (a) a plurality of direct-path transmitted RF signal arrival times; and (b) a plurality o…