Results 41 to 50 of about 135,559,631 (126)

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, Volume 43, Issue 5, Page 3292-3311, August 2026.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

Lunar Trailblazer Spacecraft Tracking and Mission Recovery Attempt: Characterization of Status and Behavior of a Non‐Cooperative Object in Cis‐Lunar Space

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Unexpectedly following launch, the Lunar Trailblazer mission experienced software anomalies that led it to orient solar panels away from the sun and lose communication with Earth. This paper describes efforts to determine the spacecraft state and attempt recovery of the mission's science at the Moon.
B. L. Ehlmann, J. Bellerose, G. Lantoine, E. Furlan, E. Scire, S. Fajardo‐Acosta, L. Bennett, M. Sanchez Net, T. J. W. Lazio, M. Brozović, J. Masiero, A. V. Steckel, P. A. Burke, M. Kimura, S. Foxman, M. P. M. Zaw, L. M. Lee, F. Clarke, M. Hauge, D. McDonald, J. Adler, R. Strauss, D. Trilling, C. S. Edwards, M. C. Nolan, D. Lyster, L. Robinson, A. T. Klesh, C. C. Seybold   +28 more
wiley   +1 more source

Auroral Amplitude Scintillations Revealed With High‐Rate Scintillation Indices From a GNSS Array

Space Weather, Volume 24, Issue 8, August 2026.
Abstract As Global Navigation Satellite Signals pass through the ionosphere, particularly at high latitudes, they can refract and diffract, resulting in a phenomenon known as scintillation. Irregularities of all scale sizes can cause scintillation to occur.
G. Blinstrubas, S. Datta‐Barua
wiley   +1 more source

Simultaneous operation of two over-the-horizon radars [PDF]

, 2004
—By exploiting the reflective and refractive nature of high-frequency (HF) radiowave propagation through the iono-sphere or the conducting sea surface, over-the-horizon radar (OTHR) systems perform wide-area surveillance at long range well beyond the ...
Yimin Zhang, Moeness G. Amin, Gordon J. Frazer, Senior Member   +3 more
core   +1 more source

High frequency surface wave radar signal modeling and processing

, 2010
The use of radar has grown tremendously from its original use in the military, to its modern use in the air traffic control system. Different types of radar have been developed over the years to meet the needs of various applications and systems. High
Wang, William Hup Joo.
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   +2 more sources

A Multistatic Over-the-Horizon Radar Simulator

13611366A multistatic Over-the Horizon (OTH) radar network can offer long-range, wide-area early warning for distant threats, such as ballistic and hypersonic missiles.
Tsikrikonis, Nikolaos, Dalda, Adrián Aguilera, Björklund, Svante, Heřmánek, Antonín, Kassouras, Vassilis, Glende, Martin   +5 more
core   +1 more source

Leza Mesiah, Half the Sky, 1980-1986

Flyer for "Announcing the First Women's Bookstore in Dallas: Half the ...
Half the Sky
core   +4 more sources

Modeling specifications for HiVision Millimeter Wave Radar for multisensory Enhanced Vision Systems [PDF]

, 2013
A number of projects have been developed to increase flight safety and economy of aviation. The development and validation of systems for pilot assistance is also one field of interest.
Devendran, B, Rama Murthy, TV, Kashyap, SK   +2 more
core  

Over-the-horizon aircraft detection using skywave AM-radio broadcast signals

, 2015
We present the preliminary experimental results of a collaborative research project to determine the feasibility of using AM-radio broadcasts of opportunity for aircraft detection at ranges of thousands of kilometers from a terrestrial receiver.
Ng, B., Lim, C., Spencer, N., Thomolaris, J., Fabrizio, G.   +4 more
core   +1 more source