Very Long Baseline Radio Interferometry is one of the most recently developed and potentially most useful geodetic measuring techniques. The high accuracy which it can achieve over great distances makes it ideally suited. for studies of many interesting geodetic and geophysical phenomena. The major asset of the system is that, unlike the majority of other accurate techniques, all measurements are independent of the Earth's gravity field. This thesis contains details of the basic theory of the VLBI technique and describes a model which has been developed to analyse data from the system. This is followed by a description of the application of the variation of co-ordinates method to the adjustment of VLBI observations and details the conditions and restrictions to be applied to the adjustment process. The basic procedure and equipment required to make the observations is described and details are given of the Nottingham University Long Baseline Interferometry Programs (NULBIP) which have been developed to perform the data analysis. Data has been obtained and analysed from two independent sets of observations using two different VLBI observing systems. The Canadian system has been used for observations using the three antenna array comprising the Chilbolton Observatory, England, the Algonquin Radio Observatory, Canada, and the Owens Valley Radio Observatory, U. S. A. Observations have also been processed from the Haystack-Goldstone baseline in the U. S. A., observed using the NRAO Mk I VLBI system. The software which has been developed has been tested by comparison with independently derived results on these baselines. The analysis of all the data has shown the VLBI method to be a highly accurate technique capable of measuring intercontinental distances with sub-metre accuracy. The results have indicated the many potential uses of VLBI in geodetic and geophysical research, the major ones of which have been described. The magnitude of systematic scale and orientation errors inherent in the Navy Navigation Satellite System (otherwise known as the TRANSIT system) have been measured by comparing these VLBI results with satellite-Doppler results derived from observations made near the radio telescopes.

The just completed Mauritius Radio Telescope, a 2km by 1km T shaped synthesis array designed to repeat the 6C survey but for the Southern hemisphere, is described. Full details of the instrument hardware, and the software designed to interpret the output of the hardware are presented. The early results from the instrument, in the shape of maps of known SNR with possibly associated pulsars, are shown. In combination with publicly available X-ray data and published maps at other frequencies, conclusions on the associations are drawn. The sources described are G5.4-2.3 with PSR 1757-23, G8.7-0.1 with PSR 1800-21, G315.4-2.3 with SN 185, G320.4-1.2 with PSR 1509-58 and G343.1-2.3 with PSR 1706-44.The MRT project is an example of hardware simplifications being made possible by the increasing power and sophistication of software and computation. The sheer speed with which calculations can be done nowadays has allowed corrections to be applied post facturn, where previously it would have to be fixed in hardware (at much greater cost).

The central goals of this study were to resolve the frequently encountered complex mathematics in surveying education by offering new solution methodology utilizing e-math tools, devise appropriate curriculum reform in light of the computing innovations developed, implement such a new paradigm, and evaluate the usefulness of the e-math innovations to civil engineering (CE) students beyond the surveying domain. Current teaching practices and beliefs of surveying instructors were also examined to identify possible current under-utilization of e-math tools in teaching. / Of particular interest in this study were the use of spreadsheets tools to tackle tedious numerical optimization problems, and the delegation of horrendous algebraic derivations to computer algebra systems (CAS). The technical contributions began with a new proof of Tienstra's formula, connecting it to the finite element method to facilitate transfer of knowledge, while CAS was applied to tackle the complicated analytical derivations. CAS methods were further devised to tackle least squares (LS) adjustment problems. The new CAS-based solution approach allowed teaching and learning of LS topics to be conducted at a significantly faster pace, by automating the massive yet peripheral calculations traditionally requiring manual labour, while the mathematical details of the entire solution procedure remained transparent. / On the other hand, to benefit students with weak mathematics backgrounds, calculus-free yet mathematically rigorous methods were also developed. An alternative ellipsoid perspective on constrained optimization was offered, together with an efficient and practical solution procedure for direct residual minimization using Excel's optimization solver. Not requiring series expansion of programming, the new approach made LS adjustment as easy to apply as non-rigorous methods, yet restored mathematical rigor. After being applied to the popular topics of traverse and triangulation adjustments, the revolutionary spreadsheet approach was further extended to the more advanced topic of LS coordinate transformation, while modelling errors for such transformations in the literature were also corrected. Furthermore, a convenient spreadsheet method for estimating curve parameters was also developed, combining the powers of solver and VBA to solve the global problem and revealing the inaccuracies in solutions previously given in the literature. / Thesis (PhDEducation)--University of South Australia, 2005.

Thesis (Ph.D. - Renewable Natural Resources)--University of Arizona. / Includes bibliographical references (leaves 190-192).

Thesis (Ph. D.)--Open University. BLDSC no. DX92591. / 2 volumes.

Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Tesis (Ingeniero topografo y geodesta)--Universidad Autónoma de México, Escuela Nacional de Ingeniera, 1959.

Thesis (M.Sc.)--York University, 2009. Graduate Programme in Computer Science and Engineering. / Typescript. Includes bibliographical references (leaves 91-93). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR51517

Thesis (M.S.)--University of Wisconsin--Madison, 1966. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 56.

Thesis (M. Sc.)--Syracuse University, 1939. / Bibliography: p. 43.