The report presents some results of L-band signal level measurements taken from the ATS-5 spacecraft operating in the narrow-band frequency translation mode. The uplink signal was sent from the DOT/TSC/Westford Propagation Facility in Westford, Massachusetts, which has geographic coordinates of latitude: 42.60 deg. N and longitude: 71.50 deg. W and is thus a midlatitude site. The uplink signal was transponded by the NASA ATS-5 spacecraft and re-radiated back to earth. The signal was received by several L-band receiving systems located at the Westford facility. The data are presented weekly, monthly and seasonal plots of the root-mean-square of the probability density function and the 90th percentile level of the probability distribution function of the received signal amplitude. Sample analog recordings of the signal are also presented along with the corresonding computer calculated statistics. Brief equipment descriptions are included along with a description of an automatic data collection platform which was used during some of the measurements.

  • Corporate Authors:

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142
  • Authors:
    • Brown III, W E
    • Haroules, G G
    • Thompson III, W I
  • Publication Date: 1975-9

Media Info

  • Pagination: 187 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00093537
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-OST-75-43 Final Rpt.
  • Files: NTIS
  • Created Date: Jan 21 1976 12:00AM