Results 31 to 40 of about 238,197 (181)

Autonomous FMCW Radar Survey of Antarctic Shear Zone [PDF]

, 2010
Radar survey of the Antarctic shear zone was conducted using an ultra-wideband (2-10 GHz) frequency modulated continuous wave (FMCW) radar. The radar was mounted on a sled and pulled by a robot that was specifically designed to operate in a harsh polar ...
Arcone, Steven A., Koh, Gary, Lever, James H., Marshall, Hans-Peter, Ray, Laura E.   +4 more
core   +2 more sources

Signal design and processing for noise radar

EURASIP Journal on Advances in Signal Processing, 2022
An efficient and secure use of the electromagnetic spectrum by different telecommunications and radar systems represents, today, a focal research point, as the coexistence of different radio-frequency sources at the same time and in the same frequency ...
Gaspare Galati, Gabriele Pavan, Christoph Wasserzier   +2 more
doaj   +1 more source

HISCAT: A proposed new scatter facility in Northern Scandinavia [PDF]

, 1986
It is proposed that a new versatile ionospheric and atmospheric scatter radar be constructed in northern Scandavia through a multinational collaborative effort. The new facility tentatively named HISCAT (High frequency, High power, High latitude, Heating
Bostrom, R., Thide, B.
core   +1 more source

Capabilities and challenges of passive radar systems based on broadband low‐Earth orbit communication satellites

IET Radar, Sonar & Navigation
Recently, several constellations of broadband low‐Earth orbit communication satellites, such as Starlink or OneWeb, have started to be deployed to provide global internet access.
Rodrigo Blázquez‐García, Diego Cristallini, Martin Ummenhofer, Viktor Seidel, Jörg Heckenbach, Daniel O’Hagan   +5 more
doaj   +1 more source

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

Investigations of the lower and middle atmosphere at the Arecibo Observatory and a description of the new VHF radar project [PDF]

, 1986
The atmospheric science research at the Arecibo Observatory is performed by means of (active) radar methods and (passive) optical methods. The active methods utilize the 430 NHz radar, the S-band radar on 2380 MHz, and a recently constructed Very High ...
Hagen, J., Ierkic, H. M., Rottger, J., Zimmerman, R. K.   +3 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

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

RADAR ON RAIA: High frequency radars in the RAIA Observatory

, 2021
The RADAR ON RAIA project aims to update and extend beyond the Galician border the High Frequency (HF) radar network that has been operating since 2011 in the framework of the RAIA Observatory. The Project is allowing the establishment of a cross-border collaboration beyond the physical infrastructure itself, developing a sharing strategy of ...
Piedracoba Varela, Silvia, Allen-Perkins, Silvia, Ayensa Aguirre, Miren Garbiñe, Álvarez Fanjul, Enrique, Basañez Mercader, Ana María, Almeida Costa, Alexandre, dos Santos Fernandes, Carlos Alberto, Gil Coto, Miguel, Lorente Jiménez, Pablo, Matos, José, Montero Vilar, Pedro, Oliveira, Lino, Pérez Muñuzuri, Vicente, Redondo Caride, Waldo, Rosón Porto, Gabriel, Gil Ruíz de la Serna, María Isabel, Ribeiro, Catarina, Seca, J., Torres López, Silvia, Varela Benvenuto, Ramiro Alberto, Vázquez Fernández, Marta, Vila Taboada, Begoña, Ríos Viqueira, José Ramón   +22 more
openaire   +2 more sources

The first operation and results of the Chung-Li VHF radar [PDF]

, 1986
The Chung-Li Very High Frequency (VHF) radar is used in the dual-mode operations, applying Doppler beam-swinging as well as the spaced-antenna-drift method. The design of the VHF radar is examined.
Chao, J. K., Chu, Y. S., Fu, I. J., Kuo, F. S., Liu, C. H., Rottger, J.   +5 more
core   +1 more source