Title:
【発明の名称】距離測定方式
Document Type and Number:
Japanese Patent JP3349510
Kind Code:
B2
Abstract:
A distance measuring system is disclosed in which a user (2) in possession of a portable distance calculator (50) can determine the distance (D1, D) between an actual position (B) and a fixed position (L, P). Satellite position data of the fixed position (L, P) is determined periodically and supplied to the calculator (50). The calculator (50) includes a satellite position receiver (51) and a processor (54) which permit the distance (D1, D) to be determined. In a preferred embodiment error correction is performed by determining a satellite differential position error at a known survey reference location (R) and supplying the error to the calculator (50) for correction of the actual position (B) and, where necessary, the fixed position (L, P).
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Inventors:
Gunthorpe, Thomas Charles
Thomas, Graham Wayne
Thomas, Graham Wayne
Application Number:
JP51046493A
Publication Date:
November 25, 2002
Filing Date:
December 16, 1992
Export Citation:
Assignee:
Pin Ranger (Australia) Proprietary Limited
International Classes:
A63B57/00; G01S5/00; G01S5/14; G01S19/07; G01S19/41; A63B69/36; G01S19/19; (IPC1-7): G01S5/14; G01S11/02
Domestic Patent References:
| JP2126875A | ||||
| JP6294885A |
Other References:
【文献】米国特許4894655(US,A)
Attorney, Agent or Firm:
Susumu Uchihara