A Study of Geodetic Techniques

摘要

Studies of the geodetic potential of measuring systems employing light, microwaves, very low frequency and extra low frequency radio waves are given with emphasis on the type of measurement each system is best suited for. A summary of the accuracies possible with a sample system gives an idea of the design considerations necessary in that part of the spectrum. A section on transmitting media outlines the fundamentals of atmospherics encountered in each part of the spectrum, and suggestions for elimination of errors due to atmospherics are given. Sample techniques presently employed in geodetic systems are given to illustrate the use of these techniques and to illustrate the source of errors in each technique. Reports of mathematical investigations and field tests undertaken during this contract and the subsequent results of these projects are given. These projects are evaluation reports of existing or experimental equipment and their use may apply to more than one section of the frequency spectrum and are presented under a separate section. (Author)