Leveling Network Measurement Adjustment Software Design And Development

In recent years, with the social needs and technology development, and national efforts to develop basic facilities construction, there is a growing number of projects, surveying and mapping which works as an auxiliary industry plays a fundamental and irreplaceable role, it is the basis of the project. Modern engineering requirements on a variety of measurement accuracy is also getting higher and higher, as a result, data processing and mapping engineering appears particularly important, rigorous adjustment must be in surveying engineering data to ensure accuracy. In addition, aiming at special requirements for some projects, a variety of new adjustment benchmark or model also be applied to practical work. The purpose of this subject is to solve the data processing problem of mapping outside the industry to measure the income level of network. In order to adapt to project needs, this research mainly studies the characteristic of engineering leveling network adjustment benchmark under different adjustment datum, indirect adjustment, or the indirect adjustment model which is accompanied by the limiting condition, applied to software design and development of surveying adjustment. First analysis to data structure of classic level network, meet level network and rank defect network, the error equation coefficient calculation, the composition and solution of the normal equation, the adjusted value calculation, the difference and precision evaluation of different reference, its feasibility analysis can be applied to software. Use Visual Basic6.0programming language to write software for data entry, data processing, data output, data storage and data management and so on, according to the actual needs, users can set adjustment scheme to elect the most suitable one for practical problem of adjustment calculation. Finally apply instance to test software and achieve the intended purpose.