On the Variety of Particle Phenomena Discernible at the Geostationary Orbit via the ATS-1 Satellite
Rice University ion detector aboard synchronous orbit Applications Technology Satellite /ATS-1/
Freeman, J. W., Jr.↗
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On the variety of particle phenomena discernible at the geostationary orbit via the ATS-1 satellite.
Charged particle fluxes pre- and postmidnight asymmetry, magnetospheric boundary, particle clouds and low energy burst observed with ATS-1
Freeman, J. W., Jr.↗
Total electron content measurement with a geostationary satellite during the solar eclipse of 7 March 1970
Ionospheric electron density measurements during solar eclipse by ATS 3 satellite
Rangaswamy, S.↗
A conceptual study of a momentum wheel stabilized geostationary aeronautical satellite
Momentum wheel stabilized, sun-oriented, synchronous equatorial satellite for aeronautical satellite system NETCOS
Goldberg, G.↗
Analysis of a navigation concept employing a spinning radiating interferometer in geostationary orbit
Analysis of concept of spin-stabilized synchronous satellite carrying interferometer transmitting CW signals in L-band
Thomas, G. R.↗
Convective transport of mass and energy in severe storms over the United States - An estimate from a geostationary altitude
Severe storm mass and energy convective transport characteristics, using ATS-3 cloud photographs and three layer model
Anderson, C. E.↗
Magnetopause crossing of the geostationary satellite ATS 5 at 6.6 RE
Magnetopause crossing observation of ATS 5 satellite during magnetic storm
Skillman, T. L.↗
Time variation of tropical energetics as viewed from a geostationary altitude
Latent heat convective transport from lower to tropical upper troposphere, noting periodic energy fluctuations from time lapse synchronous satellite cloud photographs
Sikdar, D. N.↗
A technique for synoptique measurement of ionospheric propagation delays by ranging from geostationary satellites to a network of unmanned transponders.
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Anderson, R. E.↗
Determination of exospheric electron content from group delay and Faraday rotation observations of geostationary satellite signals.
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Dubroff, R. E.↗
Substorm phenomena and the uniqueness of the geostationary orbit for observation of dynamic processes in the magnetosphere
During the Spring equinox, both ATS-6 and ATS-5 were in geosynchronous orbit with a separation of about 11 deg longitude. A ground-based campaign was undertaken by Eather, Mende, and Judge to observe aurora at the foot of the ATS field line with a variety of instruments. Initial results support the injection boundary hypothesis of Mauk and McIlwain. Also during this period, the Cs-ion thrusters on both spacecraft were exercized in a deliberate attempt to control the spacecraft potential. Some success was achieved, and the presence of a sheath with a potential minimum about ATS-5 has been demonstrated (the sheath about ATS-6 is observed directly).
Deforest, S. E.↗
Hot plasma dynamics within geostationary altitudes
The reported investigation is based on observations made with the aid of the Explorer 45 satellite. Observations of protons during geomagnetic storms are discussed and attention is given to considerations of energy densities, hot-cold plasma interactions, stable and turbulent regions, the distribution function, charge exchange losses, the formation of stable auroral red arcs, and adiabatic and nonadiabatic responses. The behavior of energetic electrons is considered along with studies of quiet-time conditions and investigations of storm and poststorm behavior.
Williams, D. J.↗
Earth observation from geostationary orbit
The paper describes a number of satellite-borne infrared spin-scan sensors and discusses the operational requirements for which they were designed. The sensors considered are the spin scan cloud cameras of ATS 1 and 3, the SMS/GOES visible-infrared spin-scan radiometer, and the VISSR atmospheric sounder.
Hummer, R. F.↗
Design concept of geostationary platform
The payload efficiency of communication satellites has typically averaged 25 to 30% while meteorology and earth observation satellites range from 30 to 35%. Improvement in solar cell efficiency, batteries, electric propulsion for stationkeeping, and solid-state circuitry will increase this efficiency in the future, but it will still be advantageous in the Shuttle era to reduce the expenditure for support systems. A platform that provides all the support functions could reduce the initial cost due to economics of scale and also reduce transportation cost. Three alternate configurations of a platform for geosynchronous orbit communications and meteorology missions are presented
Hamilton, E. C.↗
Stereographic cloud heights from the imagery of two scan-synchronized geostationary satellites
Scan synchronization of the sensors of two SMS-GOES satellites yields imagery from which cloud heights can be derived stereographically with a theoretical two-sigma random uncertainty of + or - 0.25 km for pairs of satellites separated by 60 degrees of longitude. Systematic height errors due to cloud motion can be kept below 100 m for all clouds with east-west components of speed below hurricane speed, provided the scan synchronization is within 40 seconds at the mid-point latitude, and the spin axis of each satellite is parallel to that of the earth.
Minzner, R. A.↗
Synchronous meteorological and geostationary operational environmental satellites battery and power system design
The battery was a three ampere hour nickel cadmium prismatic cell. The battery consists of 20 cells connected in series and there were two batteries per spacecraft. The battery operations (voltage and temperature) that the spacecraft sees during a normal operational day are discussed.
Baer, D. A.↗
Synchronous meteorological and geostationary operational environmental satellites operational experience
The mode of operation that is of interest in this discussion is a solar array battery load-sharing mode. The battery is loaded for a fraction of a second and then charged, so the cycle is a 100 millisecond load, followed by a 500 millisecond charge. The purpose of the experiment was to evaluate the charge efficiency and the state of charge. Charge/discharge ratio graphs are presented.
Haas, R. J.↗
Snow extent measurements from geostationary satellites using an interactive computer system
The author has identified the following significant results. A time series of GOES full resolution visible image sectors was viewed on the McIDAS video component in chronological order and registered to within plus or minus 1 image pixel to compute real time snow melting rates. Synoptic scale clouds were eliminated to create a snow covered area from a composite image. Results show good agreement with NESS products although a significant difference was noted for one two-day period when the NESS products showed an increase in the snow cover for the Verde Basin, while the GOES/McIDAS product implied no change in the snow cover for approximately the same period. A check of NWS radar reports indicated no precipitation had occurred within the Verde basin. The use of the registered image sequence eliminates instrument error since small changes in the snow cover between any two days are easily detected.
Gird, R. S.↗