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Image:Zenitcheckup.jpg 300px The Zenit satellite, assembly and check before flight. Image:Zenitmating.jpg 300px The Zenit satellite is prepared for mating with the rocket. Category:Spacecraft

Image:Zenit2.jpg 500px The Zenit-2 satellite. It was the first special-purpose unmanned satellite from which Earth photography was performed. Category:Spacecraft

Image:Zenit4.jpg 500px The Zenit-4 satellite. Category:Spacecraft

... satellites, 115 surveillance satellites, 97 navigational satellites, 194 Earth observation/remote sensing satellites, 195 civilian governmental and military communications satellites and 511 commercial communications satellites in operation at that time. Although communications satellites ... systems are the direct descendants of these. The Soviet Zenit spy system, using the same Vostok capsule design ...

... , Yantar, Zenit '''JBIS Reference Code ''' - 2001.54.344 '''Number of Pages''' - 17 Abstract During the "Soviet era" western observers of the Soviet space programme developed classifications of the photoreconnaissance satellites which were launched based upon the telemetry picked up from the satellites by the Kettering Group and the satellites' in-orbit behaviour. Following the demise ...

... , Fram, photoreconnaissance, remote sensing, Zenit. '''JBIS Reference Code ''' - 2001.54.371 '''Number of Pages''' - 6 Abstract In the mid-1970s the Soviet Union started to identify some satellites as being flown for natural resources monitoring. It is now known that most of these satellites comprised the Fram and Resurs -F series ...

... , Orion, photoreconnaissance, Zenit '''JBIS Reference Code ''' - 2001.54.417 '''Number of Pages''' - 7 Abstract The Soviet-era Orion satellites launched within the Cosmos programme were the first recoverable cartographic satellites to be flown ...

... '''Page ''' - 202-216 '''Year''' - 2002 '''Keywords''' - Launch, photoreconnaissance, Orlets , recovery, Yantar , Zenit '''JBIS Reference Code ''' - 2002.55.202 '''Number of Pages''' - 15 Abstract ... times of Russian photoreconnaissance and related satellites, noting relationships between these times and the orbital inclinations and different satellite groups. '''To BUY this paper ...

... the ground to access satellites with only cellphone sized satellite hand phones or transceivers the size of a laptop to have broadband access to satellites. No longer are their satellite ground stations that are ... (atomic number 77) was initially to have 77 satellites (11 satellites in 7 planes) but ended up with 11 satellites in six planes. This small satellite constellation for global mobile communications was first conceived ...

... community. Keywords: Nanosatellites; CubeSats; APRS; Amateur Radio; link budget; downlink; access time; ground station; virtualization; satellite; 1. INTRODUCTION One of the limiting factors of CubeSat mission design is the amount of ... ; orbital elements, downlink frequency, transmission power, antenna design, modulation type, protocol, data rate, Object ID, satellite name, radio type, mission lifetime, mission status, and more. Admittedly, ExampleSat-165’s downlink frequency ...

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