Matavimo elektroniniais tolimačiais rezultatų koreliacijos analizė

Abstract

The correlation effect on the values gained by range finders, when it is strongly influencing the measured value function accuracy is discussed in the article. The correlation sources are various possible random weather condition changes, which influence the changes of range finder signal parameters. In theoretical investigation the light velocity random changes, due to the accidental changes of atmospheric parameters in temperature and pressure have been used. The correlation coefficient expression for different line lengths and various range finder oscillation series has been determined. For practical correlation coefficient computation the measured lenghts of five bases have been used. The gained correlation coefficient values are changed accidentally and in a very large range. The actual reason for this effect is a random fluctuation of atmospheric parameters along the entire line. Consequently, the random electromagnetic oscillation parameter change appears and it effects the mutual correlation of the measured values.