Results 91 to 100 of about 26,274 (206)
The Skylab radar altimeter [PDF]
, 1972 A summary of the significant hardware characteristics of the S-193 altimeter experiment portion of the 1973 Skylab Mission is presented. A detailed discussion of the altimetry, oceanographic, and instrumentation technology objectives are presented along ...
Mcgoogan, J. T., Stanley, H. R.
core +1 more source
Controlled Tracking in Urban Terrain: Closing the Loop
, 2018 We investigate the challenging problem of integrating detection, signal processing, target tracking, and adaptive waveform scheduling with lookahead in urban terrain.
Barbosa, Patricia R. +5 more
core +1 more source
Monitoring Groundwater Pumping Using Time‐Lapse Tomography From Ambient Seismic Noise
Water Resources Research, Volume 62, Issue 4, April 2026.Abstract Management of water resources will be of critical importance as the effects of climate change accelerate. This implies the need to monitor water resources with high spatial and temporal resolution. One way to meet this need could be passive seismic methods using ambient seismic noise. In this study, we present a novel approach using time‐lapse
Richard Kramer +5 more
wiley +1 more source
Closed-Form Waveform Design for MIMO Radar Transmit Beampattern Synthesis via Integral Equality
IEEE Access, 2020 Recently, due to the adequate use of waveform diversity, MIMO technology has been widely adopted, resulting in the waveform design for MIMO radar beampattern synthesis becoming a hot issue. However, most previous works regarding this problem optimize the
Yezi Ma, Ping Wei, Huaguo Zhang, Yan Pan
doaj +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.Abstract On 3 August 2021, a flotilla of four Heliotrope solar hot air balloons was launched from central New Mexico (USA). The balloons, equipped with microbarometers, flew from sunrise to sunset at altitudes between 17 and 22 km. During the flight, eight chemical explosions ranging from 45 to 136 kg TNT equivalent and a thunderstorm occurred in the ...
T. Farges +5 more
wiley +1 more source
Adaptive radar phase-coded waveform design
Electronics Letters, 2009 A simple and successful design for an adaptive radar phase-coded waveform is presented. The optimised phase-coded waveform is designed by the phase-only conjugate gradient method. The signal-to-interference-plus-noise ratio of the optimised phase-coded waveform is compared with an optimal waveform and good approximation is achieved.
J.D. Zhang, X.H. Zhu, H.Q. Wang
openaire +1 more source
Photoplethysmography for Measuring Cognitive Load in XR Environments: A Systematic Review
Advanced Sensor Research, Volume 5, Issue 3, March 2026.ABSTRACT Photoplethysmography (PPG) is a low‐cost, low‐power biosensing technology with growing applications in education, particularly for monitoring cognitive load in eXtended Reality (XR) learning environments. Measuring cognitive load is critical for preventing overload and optimising immersive learning, yet existing approaches such as self‐reports
Alya Alshehhi +2 more
wiley +1 more source
LTE Spectrum Sharing Research Testbed: Integrated Hardware, Software, Network and Data
, 2017 This paper presents Virginia Tech's wireless testbed supporting research on long-term evolution (LTE) signaling and radio frequency (RF) spectrum coexistence. LTE is continuously refined and new features released.
Marojevic, Vuk +2 more
core +2 more sources
Cognitive Radar Waveform Optimization Based on Mutual Information and Kalman filtering
Entropy, 2018 A new strategy to optimizing the waveforms of cognitive radar under transmitted power constraint is presented. Our scheme is to enhance the performance of target estimation by minimizing the MSE (mean-square error) of the estimates of target scattering ...
Yu Yao, Junhui Zhao, Lenan Wu
doaj +1 more source
The Fundamentals of Radar with Applications to Autonomous Vehicles [PDF]
, 2019 Radar systems can be extremely useful for applications in autonomous vehicles. This paper seeks to show how radar systems function and how they can apply to improve autonomous vehicles.
Rummel, Kameron
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