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The initial study of calibrating receiving digital beam forming in engineering test satellite-9

The initial study of calibrating receiving digital beam forming in engineering test satellite-9

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In realizing geostationary high throughput satellite (HTS), building flexible beam adapting to change of communication traffic is needed. Digital beam forming (DBF) has advantages of flexibility of beam steering and high integration. The R&D project focused on developing receiving DBF with Ka-band is ongoing. In DBF system, it is important to calibrate the gain, phase, and delay for each antenna element. In this chapter, we propose a method of calibration using digital processing on the satellite and ground station. The crosscorrelation vector between elements calculated in digital processor on the satellite is useful for detecting error of the gain, phase, and delay for each antenna element. These errors will be corrected with setting the correction coefficient to the satellite, which is calculated at the ground station with a cross-correlation vector transmitted from the satellite.

Chapter Contents:

  • 45.1 Introduction
  • 45.1.1 System configuration of DBF
  • 45.1.2 Difficulty of DBF
  • 45.2 Method of calibration
  • 45.2.1 Detection of gain/phase error between elements
  • 45.2.2 Calibration method with ground station
  • 45.3 Conclusion
  • Acknowledgments
  • References

Inspec keywords: calibration; correlation methods; satellite communication; beam steering; array signal processing

Other keywords: digital processing; beam steering; Ka-band; geostationary high throughput satellite; digital beam; receiving DBF; communication traffic; digital processor; antenna element; crosscorrelation vector; DBF system; flexible beam; ground station; size 9.0 inch; engineering test satellite-9; cross-correlation vector

Subjects: Antenna arrays; Signal processing and detection; Mobile radio systems

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