DATA ANALYSIS OF ECHO I, II, AND THE MOON. VOLUME I. AN ANALYSIS OF ECHO II REFLECTED SIGNALS AT 2 KMC/SEC.
Abstract
This report presents an analysis of the level of the received power which originated from the Floyd Passive Satellite Research Terminal in the form of 4- 10 millisecond pulses at 2.27 KMC as reflected from Echo II. An analysis one on the instantaneous basis and one on the averaged basis (tau = 0.05, 0.2 sec) was carried out. From the instantaneous analysis it was found that rapid fades on the order of 1/20th of one second often occurred with a depth as large as 20 dbs. Fades on the order of 10 db are more common, and 3-5 db continuous variations are characteristic of the Echo II link. Pulse amplitude distortion was found to be probably ascribable to the doppler shift due to the balloon's rotation. The depth and severity of the fades, as well as the frequency of their occurrence was readily observable from the averaged, smoother data also. The averaged data show a 3-5 db consistent discrepancy which, in the light of the accuracy of the measurements, is more on the order of 1 to 3 decibels. Echo II appears to present a radar cross-section 1 to 3 decibels below the one calculated on the basis of geometrical cross-section. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0617536
Entities
People
- J. W. Eberle
- S. L. Zolnay
Organizations
- Ohio State University