US 8,803,730 B2 · Radar pulse detection using a digital radar receiver

Abstract

A system, method, and apparatus for radar pulse detection using a digital radar receiver are disclosed herein. In electronic warfare (EW), radars operate in an environment with highly dense electronic waveforms. As a result, the radars may receive thousands or millions of radar pulses every second. To detect and sort out radar pulses emitted from different radars is a challenging problem in electronic warfare. The present disclosure teaches a radar pulse detection system that utilizes digital channelization and joint-channel detection techniques to detect and separate radar pulses that are sent from different radar emitters. The main features of the present disclosure are: 1.) a digital channelization technique to separate radar pulses from their mixtures; 2.) a multi-channel detection technique to detect radar pulses; and 3.) an innovative technique to separate overlapped radar pulses.

Claims20

Dependent claims

A method for radar pulse detection using a digital radar receiver, the method comprising:

inputting at least one radar signal into a mixer;
mixing the at least one radar signal with a mixing signal to downconvert the at least one radar signal;
applying anti-aliasing filtering to at least one downconverted signal that is outputted from the mixer;
inputting at least one filtered signal into an analog-to-digital (A/D) converter to convert the at least one filtered signal from an analog signal to a digital signal;
applying digital channelization to at least one digital signal that is outputted from the A/D converter to sort the at least one digital signal into different frequency bands;
applying radar pulse detection in the time domain to the at least one sorted digital signal to detect the radar pulses from noise;
and
applying parameter estimation to the detected radar pulses to estimate parameters of the detected radar pulses.

5 more elements

Dependencies are inferred from the claim text.

Radar pulse detection using a digital radar receiver

Life of this patent

Radar pulse detection using a digital radar receiver

Life of this patent

Abstract

Claims20