Time Series Analysis of VLBI Astrometric Source Positions at 24-GHZ

Abstract

To date there have been 10 VLBI experiments observed over a period spanning 5 years and analyzed for the purpose of establishing a high-frequency (24 GHz) reference frame. The database now contains information on 274 sources and a total of 1052 images. From the data, we have produced a high-frequency astrometric catalog of 266 sources. Of these 266 sources, 88 of them have been observed in at least five epochs. We produced time series of source positions for each of the 88 sources and compare source position variations at 24 GHz with variations in the same sources at X band. Here we discuss the astrometric catalog, the stability of the sources at 24 GHz, and the possible implications for ICRF2.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2007
Accession Number
ADA483471

Entities

People

  • A. L. Fey
  • D. A. Boboltz

Organizations

  • United States Naval Observatory

Tags

DTIC Thesaurus Topics

  • 5G Wireless Networks
  • Abstracts
  • Bandwidth
  • Data Processing
  • Databases
  • Frequency
  • Frequency Bands
  • K Band
  • Microwave Frequency
  • Observation
  • Radio Astronomy
  • Radio Frequency
  • Space Navigation
  • Time Series Analysis
  • X Band

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Computer Vision.