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Effect of Sky Noise on Antenna Temperature

  • Roger A. Dana
Chapter

Abstract

The often used but rarely justified formula by Blake that the antenna temperature TA contribution from sky temperature TS is TA = 0.876TS+36°K. This equation is particularly mysterious when one considers the origin of the coefficients 0.876 and 36°K. In this chapter, the basic principles behind this expression are discussed, and it is shown to be valid for a 1950s type of antenna with high back or sidelobes. A general expression that applies to modern ESAs is developed.

Keywords

Electronically scanned array (ESA) Sky noise temperature Antenna noise temperature 

References

  1. Blake, L. V. (1969a, December). A guide to basic pulse-radar maximum-range calculation, part 1: Equations, definitions, and aids to calculation, NRL-R-6930.Google Scholar
  2. Blake, L. V. (1969b, December). A guide to basic pulse-radar maximum-range calculation, part 2: Derivations of equations, bases of graphs, and additional explanations, NRL-R-7010.Google Scholar
  3. Dana, R. A. (2016, September). Revisit of antenna sky temperature for ESAs. In: Proceedings of antenna applications symposium.Google Scholar
  4. Taylor, T. T. (1955, January). Design of line source antenna for narrow beam width and low side lobes. IRE Transactions on Antennas and Propagation, 3, 16–28.CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Roger A. Dana
    • 1
  1. 1.Advanced Technology Center of Rockwell CollinsCedar RapidsUSA

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