公开(公告)号：US3854133A

公开(公告)日：1974-12-10

申请号：US36428573

申请日：1973-05-29

Applicant: SOUTH AFRICAN INVENTIONS

Inventor： CABION P

IPC: G01S13/84 ,  G01S13/36 ,  G01S9/04

CPC classification number: G01S13/36

Abstract: In an electro-magnetic distance measuring instrument of the type in which a distance between two points is inferred from a knowledge of the transit time of an electro-magnetic wave by means of a series of phase measurements taken with waves of decreasing effective frequency, apparatus for automatically deriving a final distance from such a series of measurements. These phase measurements have two digits, are subject to errors and are taken with waves having effective frequencies related by powers of ten. The apparatus of the invention operates sequentially on measurements due to waves of decreasing effective frequency by adding a number which may be either four or five to, and subtracting the magnitude of the tens digit of the preceding measurement from a new measurement. This operation corrects the tens digit of the new measurement for any error which may have occurred during measuring, so that it can be used as one of the digits in the final result.

Abstract translation: 在通过借助减少的有效频率的波进行的一系列相位测量从电磁波的渡越时间的知识推断出两点之间的距离的电磁测距仪中，装置 用于从这样的一系列测量中自动得出最终距离。 这些相位测量具有两位数字，受到错误的影响，并且具有与10的幂相关的有效频率的波。 本发明的装置由于有效频率降低的波形而依次测量，通过将一个可能是四个或五个的数字相加，并从新的测量中减去前一个测量的十位数字的大小，从而依次进行操作。 此操作可以对测量过程中可能发生的任何错误校正新测量的十位数，从而可将其用作最终结果中的数字之一。