Results 41 to 50 of about 1,456,467 (172)
Remote Sensing, 2021 Due to concerns about radio frequency interference from emerging telecommunications technology, there have been intensive discussions on the changes to the international Radio Regulations around 24 GHz at the recent World Radiocommunication Conference in
Quanhua (Mark) Liu +3 more
doaj +1 more source
Satellite personal communications system [PDF]
, 1980 Voice channel communication between low power mobile stations dispersed over a large area is provided by a system which includes a geostationary satellite utilizing a large UHF antenna that can receive a transmission from a caller and retransmit it over ...
Reilly, N. B., Smith, J. G.
core +1 more source
Three Dynamical Evolution Regimes for Coupled Ring-Satellite Systems and Implications for the Formation of the Uranian Satellite Miranda [PDF]
, 2018 In coupled ring-satellite systems, satellites exchange angular momentum with both the primary through tides and with the ring through Lindblad torques, and may exchange material with the ring through accretion and tidal disruption. Here we show that these coupled ring-satellite systems fall into three distinct dynamical regimes, which we refer to as ...
arxiv +1 more source
Suppression of Chaotic Motion of Tethered Satellite Systems Using Tether Length Control [PDF]
arXiv, 2023 This study focuses on attitude and control motion of two bodies (a base-satellite and a sub-satellite) connected by an inextensible and massless tether in a circular orbit under the influence of the Earths gravitational force. The base-satellite is assumed to be far more heavier than the sub-satellite.
arxiv
Scientific Technical Review, 2018 GNSS technology has been used for many applications. Beside military applications, GNSS technology is used for mini UAVs - drones. One of the possible approaches for achieving anti-drone capabilities is a jamming receiver of GNSS at drone.
Pokrajac Ivan +3 more
doaj
Geophysical Research Letters, 2023 The strongest volcanic eruption since the 19th century occurred on 15 January 2022 at Hunga Tonga‐Hunga Ha'apai, generating unprecedented atmospheric waves not seen before in observations.
Yong‐Keun Lee +3 more
doaj +1 more source
Cartwheel satellite synchronization system Patent [PDF]
, 1970 Spin phase synchronization of cartwheel satellite in polar ...
Gatlin, J. A.
core +1 more source
Giant impacts in the Saturnian System: a possible origin of diversity in the inner mid-sized satellites [PDF]
, 2011 It is widely accepted that Titan and the mid-sized regular satellites around Saturn were formed in the circum-Saturn disk. Thus, if these mid-sized satellites were simply accreted by collisions of similar ice-rock satellitesimals in the disk, the observed wide diversity in density (i.e., the rock fraction) of the Saturnian mid-sized satellites is ...
arxiv +1 more source
Sensors, 2020 In order to solve the problem of pedestrian positioning in the indoor environment, this paper proposes a high-precision indoor pedestrian positioning system (HPIPS) based on smart phones.
Lu Huang +6 more
doaj +1 more source
Transit satellite system timing capabilities [PDF]
, 1978 Current time transfer capabilities of the Transit Satellite System are reviewed. Potential improvements in the changes in equipment and operational procedures using operational satellites are ...
Finsod, T. D.
core +1 more source