Some of the fields point to user space memory; when the execution is finished, inquiry output data from the SCSI command is copied into the memory where dxferp points to.
The method presented in this paper have some advantages such as limitless number ofpoints, high efficiency of constructing TIN, fast inquiry and continuous sealless DTM ete.
所建立的数字地面模型具有对数据量不限,执行效率高,查询速度快,连续无缝等特点。
3
0 as the developing instrument, we had designed and developed the management system of control points, and the information inquiry and management method of the basic control points were realized.