Results 91 to 100 of about 45,125 (224)
Flight testing a V/STOL aircraft to identify a full-envelope aerodynamic model [PDF]
Flight-test techniques are being used to generate a data base for identification of a full-envelope aerodynamic model of a V/STOL fighter aircraft, the YAV-8B Harrier.
Bach, Ralph E., Jr., Mcnally, B. David
core +1 more source
Monte Carlo Simulation of 3D Cloud Radiance Distributions Affected by Ground‐Based Lighting
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract Satellite observations of artificial light sources at night are increasing. Clouds, as the most important radiative modulators in the Earth‐atmosphere system, significantly influence the observed values and spatial distribution of the artificial light coming from the ground.
Huixin Sun +3 more
wiley +1 more source
Amplitude suppression of nongaussian sea clutter in a noncoherent bandpass path of the receiver
Известия высших учебных заведений России: Радиоэлектроника, 2016 The method of non-linear amplitude suppression of radar clutter from a sea surface in a noncoherent band path of the receiver is considered. The model of the most adequate nongaussian a radar clutter from the rough sea surface which envelope is based on ...
E. A. Milashchenko, A. A. Yazovsky
doaj
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract Fundamental questions remain about where and when convection will occur within African easterly waves. In this study, we aim to better understand the dynamical processes that govern moist convective organization at the meso‐alpha scale in tropical easterly waves using NASA airborne field campaigns and satellite observations.
D. Colón‐Burgos, M. M. Bell
wiley +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
Empirical Comparison of Chirp and Multitones on Experimental UWB Software Defined Radar Prototype [PDF]
, 2012 This paper proposes and tests an approach for an unbiased study of radar waveforms' performances. Using the ultrawide band software defined radar prototype, the performances of Chirp and Multitones are compared in range profile and detection range.
Denoulet, J. +3 more
core
Helical automatic approaches of helicopters with microwave landing systems [PDF]
A program is under way to develop a data base for establishing navigation and guidance concepts for all-weather operation of rotorcraft. One of the objectives is to examine the feasibility of conducting simultaneous rotorcraft and conventional fixed-wing,
Dugan, D. C. +2 more
core +1 more source
, 2018 The Navy and Marine Corps cannot expect to always operate aircraft within permissive environments. Potential employment scenarios include operations against advanced surface-to-air missiles and early warning radars with detection ranges advertised beyond 200 nautical miles. Low-observable aircraft are not a panacea.
openaire +1 more source
SAR imagery of ocean-wave swell traveling in an arbitrary direction [PDF]
, 1984 The intensity wave like patterns observed in Synthetic Aperture Radar (SAR) are known to be caused by two mechanisms: the microwave radar cross sectional amplitude modulation due to tilt and hydrodynamic interaction of the long ocean waves, and intensity
Lyzenga, D. R. +2 more
core +1 more source
An Efficient Spectral Approach for JCR Narrow Band Signals in Presence of Multipath and Noise
IEEE Open Journal of the Communications SocietyJoint Communication Radar (JCR) systems have garnered significant attention due to their ability to simultaneously perform communication and radar sensing tasks.
Salem Titouni +6 more
doaj +1 more source