Accession Number : AD0654008

Title :   OPTIMUM SMOOTHING OF AERIAL GRAVITY MEASUREMENTS,

Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF GEODETIC SCIENCE

Personal Author(s) : Moritz,Helmut

Report Date : MAR 1967

Pagination or Media Count : 61

Abstract : The smoothing of aerial gravimeter records is investigated theoretically using the theory of stationary stochastic processes (time series). Two methods of optimum filtering are considered: first, least-squares filtering, due to Norbert Wiener, where the r.m.s. error is minimized absolutely; and second, equal-spectrum filtering, where the r.m.s. error is minimized subject to the condition of least distortion as expressed by preservation of spectrum. The equal-spectrum method seems to be more appropriate for aerial gravimetry because of the high noise level and has a considerable practical advantage. Emphasis is on digital computation, for which practical formulas are given; analog computation by means of electric networks is outlined. (Author)

Descriptors :   (*GRAVITY, MEASUREMENT), GEODESICS, ELECTRIC FILTERS, LEAST SQUARES METHOD, ERRORS, INTEGRAL TRANSFORMS, DIGITAL COMPUTERS, ELECTRICAL NETWORKS, STOCHASTIC PROCESSES, ANOMALIES, SPECTROSCOPY, TIME SERIES ANALYSIS, AIRBORNE, NOISE, MEASURING INSTRUMENTS, NUMERICAL ANALYSIS

Subject Categories : Geodesy
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE