Application Technology Satellite

The ATS ( Applications Technology Satellites) are called stationary , i.e., they perform one revolution about the Earth in the same time that it takes the Earth to rotate once about its axis. They practically follow the equatorial plane, being inclined 0.2° (ATS 1) and 0.4° (ATS 3) to the equator. They can be used as relay satellites for instance, ATS 3 was used to relay the television broadcast of the Mexico Olympic Games (video channel only, the audio used another satellite). 

Fig. 5.4.5 Sequence of images of the Earth from geosynchronous altitudes recorded by the Spin Scan Cloud Camera of the Application Technology Satellite 1.

Hydrazine is commercially available as aqueous solutions and, in smaller quantities, in the form of salts. Hydrazine forms a high boiling point azeotrope with water, whose composition is close to a 1 1 molar ratio, corresponding to 64% hydrazine. This solution is known as hydrazine hydrate . The capacity statistics in table 1.4-1 relate to hydrazine hydrate . Anhydrous hydrazine is only produced in very small quantities for special applications in satellite technology. 

Figure 2.1 Regulated and unregulated power-bus concepts for potential applications for satellite power systems. (Adapted from Jha, A.R., Solar Cell Technology and Applications, CRC Press, Boca Raton, FL, 2010.)...

After a number of preparatory meetings in 1969 and 1970, NASA published on 2 February, 1971 a document important to workers in all disciplines. The summary page at the end of this section should appear at the top of all applications for participation p. 6 of Preparation of proposal for investigation using data from Earth Resources Technology Satellite (ERTS 1) and Skylab (EREP) ... 

The first experiments with the thermal electric engine were conducted in Russia in 1929 by its inventor, Valentin P. Glushko, who later became a world-famous authority in rocket propulsion. For more than forty years, the United States and Russia have devoted many resources to research and development of various kinds of EREs. First tested in space by the Russians in 1964, these engines have found some limited applications in modern space technology. For more than two decades Russian weather and communication satellites have regularly used electric rocket engines for orbital stabilization. The first spacecraft to employ ERE for main propulsion was the American asteroid exploration probe Deep Space 1, launched in 1998. The performance of... 

More advanced applications of e-agriculture in farming exist in the use of sophisticated information and communication technologies such as satellite systems, Global Positioning Systems (GPS), and advanced computers and electronic systems to improve the quantity and quality of production (Food and Agriculture Organization of the United Nations 2005). 

The technologies to collect and to generate electricity by solar cells are already in the market. However, competitiveness of PV systems is high only for remote areas, communication and satellite applications. The continued research is needed to reduce costs and improve performance of PV systems. 

In recent years, satellite positioning represented by Global Positioning System (GPS) has been in extensive application, and its accuracy and reliability are likely to improve in near future. While some train traffic control systems have already applied GPS as a means of train detection, various technological developments are also under way for the application of GPS. For example, the rotary snow blowers applied the GPS to detect where it locates in the heavy snow. However, if the snow piled up to the GPS antenna, sometimes, the detection is not possible. However, it is unclear what the relationship between the positioning performance of GPS and the depth of piled-up snow to the GPS antennas. This paper reports how dry or wet snow accretion to the GPS antenna decreases the positioning performance. 

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