Results 41 to 50 of about 96,176 (211)

Superresolution for high-frequency radar

IET Radar, Sonar & Navigation, 2007
High-frequency (HF) radars require large-array antennas to achieve narrow beamwidths and are required to discriminate targets with low Doppler shifts compared with microwave radar. Superresolution processing can discriminate signals at separations much less than the beamwidth or conventional Doppler bin width (or conversely, achieve a given minimum ...
openaire   +1 more source

Characterisation of Resident Space Objects and Synchronisation Error Compensation in Multistatic Interferometric Inverse Synthetic Aperture Radar Imaging

IET Radar, Sonar & Navigation
This article presents a study on interferometric inverse synthetic aperture radar (ISAR) for three‐dimensional imaging and rotational velocity estimation.
Manjunath Thindlu Rudrappa, Martin Käske, Marcus Albrecht, Peter Knott   +3 more
doaj   +1 more source

A Compact Maritime Harmonic Radar Antenna for Navigation and Search-and-Rescue

IEEE Access
This paper presents a compact dual-band dual-polarized slotted waveguide array antenna designed for a maritime harmonic search-and-rescue system. The harmonic radar transmits signals in the S-band and receives clutter-free signals in the C-band through ...
Taher Badawy, Thomas Bertuch, Peter Knott   +2 more
doaj   +1 more source

Techniques for homodyne dechirp-on-receive linearly frequency modulated radar [PDF]

, 2011
This thesis presents work done to extend and improve the operation of homodyne dechirp-on-receive linearly frequency modulated radars. First, an investigation of the effect of common phase errors on the point response function of the radar is ...
Middleton, Robert
core  

High resolution observations of spectral width features associated with ULF wave signatures in artificial HF radar backscatter [PDF]

, 2004
International audienceThe EISCAT high power heating facility at Tromsø, northern Norway, has been utilised to generate artificial radar backscatter in the fields of view of the CUTLASS HF radars.
Woodfield, E.E., Dhillon, R. S., J. A. Davies (4412452), Milan, S.E., T. K. Yeoman, R. S. Dhillon, L. J. Baddeley (7590143), D. M. Wright, E. E. Woodfield (7590071), E. E. Woodfield, Yeoman, T. K., Woodfield, E. E., J. A. Davies, Tim K. Yeoman (7583066), Davies, J.A., Milan, S. E., Wright, D.M., Lester, M., L. J. Baddeley, Wright, D. M., Steve E. Milan (7589666), M. Lester, R. Dhillon (7590146), M. Lester (7589660), Davies, J. A., S. E. Milan, D. M. Wright (7583069), Baddeley, L. J., Dhillion, R.S., Yeoman, T.K., Baddeley, L.J.   +30 more
core   +1 more source

Time transfer via single‐record TDoA measurements of GNSS satellites using direct cross‐correlation and relative pilot code phases

IET Radar, Sonar & Navigation
Radar systems are evolving towards distributed receiver networks. As individual stations might be separated too far to install a cable link, novel methods are required to synchronise individual data records in the time domain.
Erik Busley, Timotej Žuntar, Jörg Borgmann, Michael Krist   +3 more
doaj   +1 more source

Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]

, 2011
High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core  

Characterization of a Time Transfer Channel Between a Narrow-Band Transponder on a GEO Satellite and a Ground-Based Station

Sensors
Time synchronization and positioning of bistatic radar transceivers is required to coordinate and meaningfully merge the measurements made between them. It simultaneously allows the radar transceivers to change their position throughout time.
Ferran Valdes Crespi, Pol Barrull Costa, Angel Slavov, Matthias Weiß, Peter Knott   +4 more
doaj   +1 more source

94 GHz Monolithic Transmitter for Weather Radar Application [PDF]

, 2011
This thesis was written for concluding my studies at the University of Padua. The main topic is the design of a monolithic transmitter in SiGe bipolar technology, for weather radar application at an operating frequency around 94GHz.
Puliero , Claudio
core  

Characterisation and synchronisation of a netted software defined radio radar

IET Radar, Sonar & Navigation
The present work intends to characterise the combination of two netted software defined radios (SDR) and different radio frequency (RF) front‐ends installed in them, together with a two‐stratum time dissemination and synchronisation system.
Ferran Valdes Crespi, Angel Slavov, Matthias Weiß, Peter Knott, Daniel O’Hagan   +4 more
doaj   +1 more source