Article

Cover

Title

The use of international standards in the design of new tracking, telemetry and command subsystems for spacecrafts

Authors

A.V. Mishurov, S.P. Panko

Organization

Siberian Federal University
Krasnoyarsk, Russian Federation

Abstract

The issues of the use of the standard of the Consultative Committee for Space Data Systems (CCSDS) are considered. It is shown that CCSDS recommendations lag behind the current level of science and technology, which is caused, first of all, by the long period between the revision of recommendations. This is shown in the example of the range tracking of a spacecraft. In the CCSDS recommendations, the issue of simultaneous command transmission and a range-wise pseudo-random sequence is mainly considered as the purpose of using different frequency subcarriers. However, this contradicts the requirement to reduce the bandwidth of occupied frequencies. It is shown that it is most productive to use command and rangefinding pseudo-random sequences of the same duration. It is important to alternately emit the command and rangefinder sequences and measure the range of both sequences. The highest accuracy of measuring range is achieved when the lengths of rangefinder and command sequences are equal. One more aspect not considered by CCSDS is shown, – the accuracy of measuring the radial component of the speed of the spacecraft. Based on the results of the CCSDS standards assessment, it is concluded that it is necessary to develop their subspecies – a domestic standard that takes into account both modern modulation / demodulation methods and aimed at protecting the command channel from unauthorized interference and improving the accuracy of measuring current navigational parameters such as the range and speed of the spacecraft regarding the ground control.

Keywords

spacecraft, ground control, telemetry, range tracking, CCSDS

References

[1] CCSDS. Recommendation for space. Data system standard. A blue book, 2000. A green book, The CCSDS website, www.ccsds.org.

[2] International Standards Organization. www.iso.org.

[3] Sklyar B. Cifrovaya svyaz' [Digital communication]. Moscow – St. Petersburg – Kiev, 2003. (In Russian).

[4] Pham T. T., DSN Chief System Engineer. 203, Rev. C. Sequential Ranging. DSN Telecommunications Link Design Handbook. October 31, 2009.

[5] Tikhonov V. I. Statisticheskaya radiotekhnika [Statistical Radio Engineering]. Мoscow, 1966. (In Russian).

[6] Harles G., e.a. Ranging system and method for satellites. US Patent 6864838, March, 8, 2005.

[7] Panko S. P., Tsimbal M. S. Izmerenie skorosti kosmicheskogo apparata [Measurement of the velocity of the spacecraft]. The Research of the Science City, 2015, no. 4, pp. 25–29. (In Russian).

For citing this article

Mishurov A.V., Panko S.P. The use of international standards in the design of new tracking, telemetry and command subsystems for spacecrafts // The Research of the Science City, 2017, vol. 1, no. 1, pp. 11-15.

This Article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).