Results 61 to 70 of about 897,664 (149)
SustainabilityA nondestructive approach for accurate crop yield prediction at the field scale is vital for precision agriculture. Considerable progress has been made in the use of the spectral index (SI) derived from unmanned aerial vehicle (UAV) hyperspectral images ...
Yue Zhang +6 more
semanticscholar +1 more source
The SIMPSONS project: An integrated Mars transportation system [PDF]
In response to the Request for Proposal (RFP) for an integrated transportation system network for an advanced Martian base, Frontier Transportation Systems (FTS) presents the results of the SIMPSONS project (Systems Integration for Mars Planetary Surface
Allen, Kent +8 more
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Space resources. Volume 4: Social concerns [PDF]
Space resources must be used to support life on the Moon and exploration of Mars. This volume, Social Concerns, covers some of the most important issues which must be addressed in any major program for the human exploration of space.
Duke, Michael B. +2 more
core +1 more source
Deep space monitor communication satellite system Patent [PDF]
, 1970 Elimination of tracking occultation problems occurring during continuous monitoring of interplanetary missions by using Earth orbiting communications ...
Clemens, G. W., Jr., Mascy, A. C.
core +1 more source
AgronomyUnderground coal mining in coal-grain overlapped areas leads to land subsidence and deformation above the goaf, damaging cultivated land. Understanding the influencing process of coal mining on cultivated land and crops is important for carrying out ...
Xiaoxuan Lyu +7 more
semanticscholar +1 more source
Preliminary assessment of industrial needs for an advanced ocean technology [PDF]
A quick-look review of selected ocean industries is presented for the purpose of providing NASA OSTA with an assessment of technology needs and market potential.
Balon, J. E. +4 more
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Space transportation requirements for the NASA baseline scenario for future space missions are discussed. Spacecraft/propulsion technologies required for surface-to-orbit, orbit-to-orbit, and surface (lunar) transportation are ...
Lewis, William, Rosenberg, Sanders D.
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Space resources. Volume 2: Energy, power, and transport [PDF]
This volume of the Space Resources report covers a number of technical and policy issues concerning the energy and power to carry out advanced space missions and the means of transportation to get to the sites of those missions.
Duke, Michael B. +2 more
core +1 more source
Automation and robotics considerations for a lunar base [PDF]
An envisioned lunar outpost shares with other NASA missions many of the same criteria that have prompted the development of intelligent automation techniques with NASA. Because of increased radiation hazards, crew surface activities will probably be even
Alberts, Thomas E. +7 more
core +1 more source
Conceptual analysis of a lunar base transportation system [PDF]
Important to the planning for a lunar base is the development of transportation requirements for the establishment and maintenance of that base. This was accomplished as part of a lunar base systems assessment study conducted by the NASA Langley Research
Hoy, Trevor D. +3 more
core +1 more source