THE CORRELATION OF THE SCATTERING CROSS-SECTIONS OF THE DISTURBED INDEX OF REFRACTION AND THE ACCELERATION INCREMENT OF A CONVENTIONAL AIRCRAFT DUE TO CLEAR AIR TURBULENCE,
Abstract
The theoretical relationship between the effective radar backscattering cross-section for regions of atmospheric turbulence and the mechanical energy of the turbulence is developed along the lines of existing theory. The cross-section formula is developed in terms of two parameters, the mean gradient of refractive index fluctuations in turbulence, and mean squared velocity fluctuations. Next the response of a conventional aircraft, in terms of load factor, to vertical components of velocity is determined and the substitution of parameters which is effected results in an expression for turbulence scattering cross-section in terms of mean squared load factors measurable from an aircraft, and refractive index gradient, also measurable from an aircraft. A method is thus obtained for verifying the theory of homogeneous turbulence and associated scattering theory by simultaneous measurement of radar cross-section parameters from an aircraft in the turbulence and by a ground based radar set. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 28, 1968
- Accession Number
- AD0675647
Entities
People
- A. H. Lagrone
- C. R. Griffin Jr.
Organizations
- University of Texas at Austin