The portable locus information selection manner null due to time serial mapping which generates finite mapping function

摘要

PURPOSE:To prevent the extraction of a false mobile locus and to improve reliability in the title method by accumulating only the crossing parts and extracting an integrated intersecting point. CONSTITUTION:A window W having a proper size is prepared in terms of an input point St of a certain point of time (t) to check whether an input point St - 1 of the preceding point of time (t - 1) is included in the window range or not. If so, a pair of both points St and St - 1 is formed and both points are defined as the points to be mapped for execution of the mapping. Thus the crossing part of a large circle is obtained as the mapping result. Then only these crossing parts are accumulated on a sphere. The process is carried out successively at all input points St - 1 and St of the preceding and present point of time. These processes are carried out at all points of time and finally an integrated intersecting point is extracted.