Developing a Procedure for Radiosounding of the Satellite Coverage Area using a Network of Ground Receivers (Ten-Mayak) (Ten-Mayak (Shadow-Beacon)) - 05.09.18

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
Developing a Procedure for Radiosounding of the Satellite Coverage Area using a Network of Ground Receivers (Ten-Mayak) studies very high frequency (VHF) radio reception and transmittal signal conditions from an onboard radio beacon located on the International Space Station (ISS) using the world radio amateur network and determine the characteristics of the radio signals broadcasting and retransmitting using an onboard transceiver.
Science Results for Everyone
A ham radio aboard the station sent time-stamped radio-signal information packets to amateur receiving stations around the world. Researchers analyzed the quality of the signals and effects of disturbances such as shading and elevation of the station. Many participants received the signals and transmitted data on their time, place, and characteristics via the internet. Researchers evaluated the effect of the non-uniformity of the ground reception network on the accuracy of space and time measurements and created maps of coverage areas for measurement orbits. This provides a new tool to increase the timeliness and effectiveness of managing ground measuring networks.

The following content was provided by O. M. Alifanov, and is maintained in a database by the ISS Program Science Office.
Experiment Details

OpNom:

Principal Investigator(s)
O. M. Alifanov, International Educational-Research Center Cosmos

Co-Investigator(s)/Collaborator(s)
Information Pending

Developer(s)
Information Pending

Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
Information Pending

Research Benefits
Information Pending

ISS Expedition Duration
September 2006 - April 2009; September 2010 - March 2013

Expeditions Assigned
14,15,16,17,18,25/26,27/28,29/30,31/32,33/34

Previous Missions
Information Pending

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Experiment Description

Research Overview
Information Pending

Description
Information Pending

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Applications

Space Applications
The sum total of the data and calculations obtained on the current reciprocal positions of a satellite and a ground receiver is a final product of the experiment, with which the main characteristics of the procedure for space-to-ground radio sounding can be determined using the ground radio amateur network to monitor plasma irregularities in the satellite coverage area. The initial results of the experiment confirmed the principle feasibility of using the multi-beam method of the satellite coverage area radio sounding.

Earth Applications
Ten-Mayak is used in practical classes in schools, ie, for holding collective sounding signal receipt sessions, which can be applied particularly successfully and effectively in non-classroom activities in high schools.

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Operations

Operational Requirements and Protocols
Information Pending

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Decadal Survey Recommendations

Information Pending

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Results/More Information

During the experiment, sounding packets from the on-station radio beacon in the form of time tags were emitted and received by the ground reception network, which included amateur VHF receivers, and the measuring results were broadcast on the Internet. Numerous reports on the receipt of data from participants were sent to the information collection center. The data received was processed and classified. The effect of the non-uniform sensitivity of the ground reception network was evaluated for the accuracy of space and time measurements when applying this procedure of the satellite coverage area radio sounding. Maps of coverage areas for measurement orbits were compiled. In this series of Ten-Mayak experiments, a new tool was developed to increase the timeliness and effectiveness of ground measuring network management, specifically a special Ten-Mayak experiment site that is part of the Roscosmos scientific/technical coordination board’s portal allowing the automatic registration of experiment participants and the real-time distribution of urgent notifications and news.

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Related Websites
Energia - Science Research on the ISS Russian Segment

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Imagery