Impulse noise detection and removal for radar and communication systems

Abstract

A radar system including a narrowband radar receiver configured to receive pulsed radar return signals and a wideband receiver configured for receiving wideband signals. A noise data processor is configured to identify impulse noises by analyzing wideband signals received by the wideband receiver and a radar processor is configured to cancel the identified impulse noises from pulse signals received by the radar receiver. The wideband impulse noises utilized to cancel noise from the pulse signals corresponds to the same time period sweep of detection as that of the pulse signals.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application Serial No. 61 / 349,799, filed June 14, 2016, the entire contents of which are incorporated herein by reference. Background technique [0003] Jamming can be a major impediment to the operational performance of radar systems. A common source of interference is impulsive noise, which may occur, for example, due to area lighting discharges or local man-made noise sources. Impulse noise is characterized as having a short duration and thus affects only a small part of the pulse time series. However, for systems that integrate signals detected over long periods of time, such short-duration disturbances can lead to increased noise throughout the integration segment. Traditional methods for mitigating signal attenuation caused by impulsive noise rely on detecting and removing corrupted pulses and using various techniques to limit frequency leakage across the signal ...

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Problems solved by technology

However, even small shocks can significantly increase the apparent noise level, reducing the signal-to-noise ratio

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