Accession Number : AD0657561

Title :   ON THE BEHAVIOR OF DERIVATIVE PROCESSES,

Corporate Author : ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Miller,Walter B. ; Rachele,Henry

Report Date : JUN 1967

Pagination or Media Count : 27

Abstract : Radar, and high speed photo and optical theodolites are being used more frequently by the meteorologist for obtaining wind velocity data. These systems yield position data at a much faster rate than conventional optical theodolite systems. When deriving velocity data from the basic azimuth, elevation and range data, several factors should be taken into consideration. Of the many factors considered, the most significant presented in this paper are the expression for the expected value of the position components in an XYZ Cartesian coordinate system, a discussion of the simple difference method for computing velocity, a method to test the hypothesis that the position points can be expressed as a linear function of time, the effectiveness of using a least-squares technique if the position points are a linear function of time, and the expectations of velocity and velocity variance when the position points are a polynomial function of time with certain random deviations. (Author)

Descriptors :   (*WIND, MEASUREMENT), LEAST SQUARES METHOD, FUNCTIONS(MATHEMATICS), PHOTOTHEODOLITES, METEOROLOGICAL RADAR, THEODOLITES, METEOROLOGICAL INSTRUMENTS, METEOROLOGICAL PHENOMENA, PROCESSING

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE