
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, leastsquares filtering, due to Norbert Wiener, where the r.m.s. error is minimized absolutely; and second, equalspectrum filtering, where the r.m.s. error is minimized subject to the condition of least distortion as expressed by preservation of spectrum. The equalspectrum 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