Results 191 to 200 of about 34,527 (227)

Target Detection Using HF Radar Data

OCEANS 2007 - Europe, 2007
High frequency (HF) radar systems have a potential to detect targets which are located beyond the optical horizon on the sea surface. Unfortunately sea clutter may be strong enough to prevent such detection. In this work we present results of applying space-time adaptive processing (STAP) to this problem.
Tomasz Gorski, J.-M. Le Caillec, Adam Kawalec, Witold Czarnecki, Marc Lennon, Nicolas Thomas   +5 more
openaire   +1 more source

Radio disturbance suppression for HF radar

IEE Proceedings - Radar, Sonar and Navigation, 2001
A new method of single sample polarisation filtering is proposed. The algorithm is fast and suitable for the polarisation processing of stationary or nonstationary polarised disturbed signals with one or more independent sources of disturbance. A ground wave polarimetric radar with the ability of radio disturbance suppression is then introduced.
X.L. Qiao, M. Jin
openaire   +1 more source

Presentation on HF radar SDC_metadata_for_discovery

2020
Presentation for the management of the HF radar metadata for the syncronization of your HFR radar data into the EU HFR radar ...
openaire   +1 more source

Inverse Problems in HF Radar

2003
The extraction of useful information from radar echoes cannot be accomplished solely within the domain of ‘direct’ problems, that is to say, the solution of Maxwell’s equations with prescribed boundary conditions. In general, the interpretation of radar returns involves the solution of inverse problems, which are essentially illposed, even in the ...
openaire   +1 more source

Hybrid CFAR techniques for HF radar

Radar Systems (RADAR 97), 1997
Processing of received HF radar signals to detect target echoes generally involves formation of azimuthal beams, range information and Doppler information. Typical data rates in HF radar are high, so conventional processing of these three dimensions using fast Fourier transforms is often performed to enable real-time system performance.
openaire   +1 more source

CUTLASS: a new HF auroral radar

7th International Conference on High Frequency Radio Systems and Techniques, 1996
A new bistatic HF auroral radar system (Collaborative UK Twin Located Auroral Sounding System: CUTLASS) has been constructed and deployed at sites in Finland and Iceland. The radar has a viewing area of 3/spl times/10/sup 6/ km/sup 2/, approximately the size of Western Europe, and can achieve a spatial resolution of about 50/spl times/50 km. The radars
openaire   +1 more source

Small Boat HF Radar Cross Sections

1976
Abstract : The HF radar cross section of three small ocean-going craft were measured in full scale with the SEA ECHO radar. The measurements were made over a wide band of frequencies. Care was taken in the calibration of the system to insure accurate absolute values of cross section.
Dennis B. Trizna, Robert W. Bogle
openaire   +1 more source

An HF skywave radar availability model

Sixth International Conference on `HF Radio Systems and Techniques', 1994
This paper discusses a new computer model developed at DRA to model HF skywave radars, which use ionospheric propagation to achieve coverage at ranges up to 3000 km. The purpose of the model described is to predict availability, which is defined as the long-term average percentage of time for which a specified radar performance level is likely to be ...
openaire   +1 more source

Broadband multispectral compatible absorbers for radar, infrared and visible stealth application

Progress in Materials Science, 2023
Ting Yu, Shujuan, Ming Zhou
exaly  

Enabling Joint Communication and Radar Sensing in Mobile Networks—A Survey

IEEE Communications Surveys and Tutorials, 2022
J Andrew Zhang, Md. Lushanur Rahman, Kai Wu   +2 more
exaly