Turbulence and eddy coefficients deduced from vapor trails.
Eddy coefficients for diffusion and turbulence parameters for dispersion of vapor clouds in lower thermosphere from vapor trail evidence
TURBULENCE EFFECT↗
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Results for “CoTe”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The Interrogation Recording and Location System /IRLS/ experiment
Interrogation, recording, and location system for feasibility of polar orbiting satellites
Cote, C. E.↗
Display for binary characters Patent
Cathode ray tube system for displaying ones and zeros in binary wave train
Cote, C. E.↗
The interrogation, recording, and location system experimental results
Instrumented orbital platforms for remote data acquisition and location systems
Cote, C. E.↗
Interrogation, recording, and location system
Satellites interrogation, recording and location system for data acquisition from deployed remote instrumented platforms
Cote, C. E.↗
The Nimbus 4/IRLS meteorological experiment
Nimbus 4 Interrogation Recording and Location System meteorological experiment for tropical region upper atmosphere information
Cote, C. E.↗
Satellite and ground radiotracking of elk
Radiotracking and monitoring of free-living animals in natural environments is providing an effective new technique for acquiring information on biological processes, including animal orientation and navigation. To test the practicability of extending the technique by using satellite systems for tracking animals, a female elk was instrumented with an electronic collar. It contained both the Interrogation Recording Location System (IRLS) transponder and a Craighead-Varney ground-tracking transmitter. The elk was successfully tracked and monitored by satellite during month of April 1970. This was the first time an animal had been tracked by satellite on the surface of the earth.
Craighead, F. C., Jr.↗
The Nimbus 4 IRLS meteorological experiment
The Nimbus 4 interrogation, recording, and location system is designed to locate and collect measurement data of upper atmospheric parameters through the tracking of free floating, constant level balloons flying at altitudes of 20.5 and 24.1 km and carrying specially designed interrogation packages. The basic elements of the system include a ground acquisition and command station, the Nimbus satellite, and the remote sensing platforms. Addresses of platforms as they come into view are programmed into the satellite on an orbit by orbit basis from the central ground station. Sensory data are transmitted to the satellite for storage and readout from balloon interrogation units.
Cote, C. E.↗
Satellite monitoring of black bear.
Description of a feasibility experiment recently performed to test the use of a satellite system for telemetering environmental and physiological data from the winter den of a 'hibernating' black bear, Ursus americanus. The instrumentation procedure and evaluations of the equipment performance and sensory data obtained are discussed in detail.
Craighead, J. J.↗
GRAN experiment
A global system for search and rescue was studied to reduce the time lost between a mishap and rescue efforts. The sequence of the GRAN concept proceeds as follows: (1) A distress call is initiated by a survivor and consists of the retransmission of Omega tones and a unique identifying code. (2) Signals are frequency translated through the satellite from UHF to SHF. (3) The received signals are processed in real-time using improved skywave correction and lane ambiguity techniques. The results are processed in geographical coordinates, time of day, and unique ID. This information is then relayed to the closest rescue agent. The Omega system is described, and the satellite/GRAN compatibility is discussed. The program plan and schedule are included.
Morakis, J. C.↗
The evolution of location and data collection systems in the United States.
Satellite location and data collection systems development began in the early 1960's in NASA and the French CNES. These systems were initially developed for application to meteorology and oceanography as a means of tracking moving platforms on a global scale. Additional applications such as geology, hydrology, and ecology have since evolved. To date, five successful missions have been completed. With each successive launch, systems improved in accordance with user requirements - particularly reduction in cost and complexity of platform equipment. With planned launches, facilities will be available to the user community through 1980; NASA is currently forecasting needs beyond 1980.
Morakis, J. C.↗
The Interrogation, Recording and Location System (IRLS) experiment
Explore the source record for details and available documents.
Cote, C. E.↗
Space data relay systems
Significant progress has been achieved in simplifying platform concepts through random access techniques. This is particularly important in applications such as balloons where weight is critical. In applications, where weight restriction may not be a problem, the concept lends itself to uncomplicated designs and low cost. Nevertheless, ordered systems offer inherent advantages in managing data flow which justifies their use. With continuing improvements in technology, particularly low power receivers, ordered systems should become quite competitive with random systems for many applications.
Cote, C. E.↗
Thermal and electrical properties of Evanohm and other resistance alloys below 4 K
Evanohm in the form of a fine wire is widely used in low-temperature experiments. It has a composition of 75% Ni, 20% Cr, 2.5% Cu, and 2.5% Al. The heat capacity of a rod of Evanohm was measured in the temperature range from 0.1 to 1.3 K. It was found that the specific heat of Evanohm does not display the increase found for constantan, manganin, and nichrome at low temperatures. Measurements of the thermal conductivity and the electrical and magnetic properties are also reported.
Cieloszyk, G. S.↗
Factors affecting laser-trim stability of thick film resistors
Various factors affecting precision of trim and resistor stability were considered. The influence of machine operating parameters on resistor performance was examined and quantified through statistically designed experiments for a Q switched YAG laser system. Laser kerf quality was studied by scanning electron microscopy and related to kerf isolation resistance measurements. A relatively simple production oriented, quality control test is proposed for rapid determination of kerf electrical stability. In addition, the effect of cut design and extent of trim on precision and stability were discussed.
Cote, R. E.↗
Repeater in the sky
The Public Service Communications Satellite (PSCS) program is intended to develop and demonstrate a space system aimed at stimulating future commercial markets in fixed and mobile applications. The services are envisioned for rural areas, regions beyond access to terrestrial systems, or for continuous cross-country applications. The system incorporates a UHF repeater for mobile voice and data experiments; 8 MHz of spectrum is specified for serving 70 channels. This paper describes the PSCS program and discusses some demonstration experiments. A future concept based on large structure multibeam antennas is also discussed.
Cote, C. E.↗
Advanced technology for satellite data collection systems
Technological developments in satellite data collection are aimed at relieving constraints of existing systems to permit expanded capability at lower costs in future operations. Constraints imposed by the limited electromagnetic spectrum available in the UHF band and the cost of user equipment are principal targets for improvement through technology. This paper describes ongoing developmental activities in system and component areas which will become available for the next generation of operations.
Cote, C. E.↗
Nimbus 6 Random Access Measurement System applications experiments
The advantages of a technique in which data collection platforms randomly transmit signal to a polar orbiting satellite, thus eliminating satellite interrogation are demonstrated in investigations of the atmosphere; oceanographic parameters; Arctic regions and ice conditions; navigation and position location; and data buoy development.
Cote, C. E.↗