Method for archiving and retrieving telemetry in a satellite con

Details Method for archiving and retrieving telemetry in a satellite con Method for archiving and retrieving telemetry in a satellite con

1997-10-16

2000-04-18

Loomis, Paul

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455 121, 701 13, H04B 7185

Patent

active

060525886

ABSTRACT:
A method for storing and retrieving telemetry which can reduce the size of a data storage tape and the time for retrieving data by overcoming the problems in a conventional satellite control system wherein all telemetry received from a satellite are stored without being subject to a filtering operation in a hard disk or memory of a computer for a predetermined time, and when needs arise for replaying previously stored data, a tape which stores required data is first located and mounted on a driver in order to load the required data. In accordance with the method of the present invention, data is filtered with respect to a variation of each telemetry. The data is stored step by step according to the period for which data should be stored. The data which should be stored for a long term is compressed and stored as an average value, maximum value, minimum value and variance of daily data. The generation and storage of long term data are offline processed. A data storage catalog is generated and stored into a data storage device. Thus, according to the present invention, the capacity of the data storage device and the retrieval time for replay can be reduced.

REFERENCES:
patent: 5187805 (1993-02-01), Bertiger et al.
patent: 5758261 (1998-05-01), Wiedeman
patent: 5774287 (1998-06-01), Leonhardt et al.
patent: 5802445 (1998-09-01), Wiedeman et al.
Ross M. Cox, Long Term Trending of Engineering Data for the Hubble Space Telescope, Nov. 16-20, 1992, pp. 727-732.

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