2D Matched Filtering with Time-Stretching; Application to Orthogonal Matching Pursuit (OMP)

This paper presents a matched filter which incorporates the time stretching of signals returned from moving targets. This 2D matched filter does not suffer from SNR and resolution degradation due to range migration, and can be used with agile waveforms. The use of this matched filter within the orthogonal matching pursuit (OMP) algorithm, to...

Sidelobe Mitigation in Noise Radar Using Sparse Signal Processing

It is well known that noise-like waveforms have the inherent property of suppressing ambiguities due to their nonrepetitive nature, as opposed to the more classical linear frequency modulated (LFM) pulsed waveforms. This aperiodicity also improves the robustness against jammers, making these waveforms harder to detect and classify by an enemy....

Doppler ambiguity resolution using random slow-time code division multiple access MIMO radar with sparse signal processing

In this article a novel waveform, Random SlowTime Code Division Multiple Access (ST-CDMA) for MIMO radar is presented and investigated. ST-CDMA means that the waveforms of the different transmitters are orthogonal per burst, while conventional CDMA implies orthogonal waveforms of the different transmitters per pulse. In particular, the Doppler...

Compressive sensing for high resolution radar imaging

In this paper we present some preliminary results on the application of Compressive Sensing (CS) to high resolution radar imaging. CS is a recently developed theory which allows reconstruction of sparse signals with a number of measurements much lower than what is required by the Shannon sampling theorem. This method has already found its way in...

Principal Scatterer Detection in Buildings with SAPPHIRE

Through-the-wall radar is available for single-wall penetration often requiring a position close to the wall. No proven technology exists that allows mapping of building structures in a covert way. At TNO a new concept to synthesize maps of building structures with stand-off, through-the-wall radar is under development: SAPPHIRE.

Performance of Low-rank STAP detectors

In this paper the STAP detector based on the lowrank approximation of the normalized adaptive matched filter (LRNAMF) is investigated for its false alarm probability (FAP) performance. An exact formula for the FAP of the LRNAMF detector is derived using the g-method estimator [4]. The non CFAR behavior of this detector is shown via simulations...

Reverberation Suppression Using Wideband Doppler-Sensitive Pulses

Abstract—The influence of transmitted waveforms on the signal-to-reverberation ratio (SRR) of a low-frequency active sonar is analyzed both theoretically and experimentally. Reverberation experiments have been conducted during a sea trial in a littoral water environment in October 1999. The aim of the trials was to compare the performance of...