| 摘要 |
PROBLEM TO BE SOLVED: To measure spatial coordinates of a point of interest in a spatial coordinate system with an arbitrary origin using a simple device configuration and method.SOLUTION: A coordinate measurement device measures coordinates of a point of interest by; providing a radio wave transmitter at a point of interest; providing a plurality of receivers positioned at known coordinates to receive the radio wave transmitted by the transmitter; receiving the radio wave transmitted by the transmitter using receiver pairs, each consisting of an arbitrary pair of receivers selected from the plurality of receivers; computing a travel path distance difference, or a difference between a distance from the transmitter to a first receiver and a distance from the transmitter to a second receiver, for one receiver pair; similarly computing a travel path distance difference for each of a plurality of receiver pairs; and computing coordinates of the transmitter from the known coordinates of the plurality of receivers and the travel path distance differences of the receiver pairs.SELECTED DRAWING: Figure 1 |
