Results 41 to 50 of about 1,967 (140)

New space research frequency band proposals in the 20- to 40.5-GHz range [PDF]

open access: yes
Future space research communications systems may require spectra above 20 GHz. Frequency bands above 20 GHz are identified that are suitable for space research.
Bishop, D. F.
core   +1 more source

Orbit determination and orbit control for the Earth Observing System (EOS) AM spacecraft [PDF]

open access: yes
Future NASA Earth Observing System (EOS) Spacecraft will make measurements of the earth's clouds, oceans, atmosphere, land and radiation balance. These EOS Spacecraft will be part of the NASA Mission to Planet Earth. This paper specifically addresses the
Folta, David C., Herberg, Joseph R.
core   +1 more source

Generalized Parity-Time Symmetry Condition for Enhanced Sensor Telemetry

open access: yes, 2018
Wireless sensors based on micro-machined tunable resonators are important in a variety of applications, ranging from medical diagnosis to industrial and environmental monitoring.The sensitivity of these devices is, however, often limited by their low ...
Alù, Andrea   +6 more
core   +1 more source

Theory of phaselock techniques as applied to aerospace transponders [PDF]

open access: yes
Phaselock techniques as applied to aerospace ...
Gardner, F. M., Kent, S. S.
core   +1 more source

Study of a small solar probe /sunblazer/. part ii- spacecraft and payload design progress report, jul. 1, 1964 - jun. 30, 1965 [PDF]

open access: yes
Design considerations for Sunblazer solar probe and ...
Baker, R. H.   +6 more
core   +1 more source

Engineering evaluations and studies. Volume 3: Exhibit C [PDF]

open access: yes
High rate multiplexes asymmetry and jitter, data-dependent amplitude variations, and transition density are ...
Cheng, U.   +9 more
core   +1 more source

Preliminary candidate advanced avionics system for general aviation [PDF]

open access: yes
An integrated avionics system design was carried out to the level which indicates subsystem function, and the methods of overall system integration. Sufficient detail was included to allow identification of possible system component technologies, and to ...
Birkhead, L. M.   +3 more
core   +1 more source

Satellite power system: Concept development and evaluation program. Volume 3: Power transmission and reception. Technical summary and assessment [PDF]

open access: yes
Efforts in the DOE/NASA concept development and evaluation program are discussed for the solar power satellite power transmission and reception system. A technical summary is provided together with a summary of system assessment activities.
Arndt, G. D.   +4 more
core   +1 more source

Phenomenology of the Lense-Thirring effect in the Solar System

open access: yes, 2010
Recent years have seen increasing efforts to directly measure some aspects of the general relativistic gravitomagnetic interaction in several astronomical scenarios in the solar system.
A. Arvanitaki   +258 more
core   +1 more source

Programmable rate modem utilizing digital signal processing techniques [PDF]

open access: yes
The engineering development study to follow was written to address the need for a Programmable Rate Digital Satellite Modem capable of supporting both burst and continuous transmission modes with either binary phase shift keying (BPSK) or quadrature ...
Bunya, George K., Wallace, Robert L.
core   +1 more source

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