POSITIONING SYSTEM AND RECEIVING TERMINAL USED THEREIN

• US 20080281520A1
• Filed: 05/09/2008
• Published: 11/13/2008
• Est. Priority Date: 05/10/2007
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Topcon
• Original Assignee: Kabushiki Kaisha Topcon
• Inventors: Yamaguchi, Shigeyuki, Ogawa, Kazuhiro, Takasu, Kenichi
• Granted Patent: US 9,213,104 B2
• Time in Patent Office: Days
• US Class Current: 701/213
• CPC Class Codes: G01S 19/43 using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry
• CPC Class Codes: G01S 5/0036 of measured values, i.e. measurement on mobile and position calculation on base station

Abstract

In a positioning system, an arithmetic processor analyzes positioning data acquired by a receiving terminal and determines a positioning target location. Upon reception of positioning data, the arithmetic processor accumulates the positioning data on analysis data stored in a storage section prior to the reception, stores an accumulated data as new analysis data, and transmits an analysis result to the receiving terminal. The receiving terminal transmits positioning data, acquired for a predetermined time, to the arithmetic processor and continues to acquire positioning data. Upon reception of the analysis result, the receiving terminal determines whether the analysis result is good or poor. When the analysis result is poor and the positioning data is stored for the predetermined time from a last transmission of the positioning data, the receiving terminal transmits the positioning data to the arithmetic processor and continues to acquire positioning data. If the analysis result is good, the receiving terminal completes positioning of the positioning target location.

Claims

1. A positioning system comprising:

a receiving terminal having a storage section capable of storing positioning data acquired from a satellite for a predetermined time;

an arithmetic processor capable of analyzing positioning data acquired from a satellite; and

a communication unit enabling communication between the arithmetic processor and the receiving terminal, the positioning system being capable of positioning of a positioning target location by placing the receiving terminal at the positioning target location in a fixed manner, wherein

the arithmetic processor comprises;

a storage section that is capable of storing, as analysis data, the positioning data received from the receiving terminal; and

an analyzing section that is capable of analyzing the analysis data stored in the storage section, the arithmetic processor, upon reception of the positioning data from the receiving terminal, accumulates the received positioning data on the analysis data stored in the storage section prior to the reception, stores the thus accumulated data as new analysis data, analyzes the new analysis data in the analyzing section and then transmits an analysis result to the receiving terminal,

the receiving terminal comprises;

a good-or-poor determining section that determines whether the analysis result received from the arithmetic processor is good or poor, the receiving terminal, once the positioning data is stored in the storage section for the predetermined time from an acquisition start time, transmits the positioning data to the arithmetic processor and continues to acquire the positioning data, and upon reception of the analysis result of the analysis data from the arithmetic processor, the receiving terminal determines whether the received analysis result is good or poor using the good-or-poor determining section, when the received analysis result is determined as poor and the positioning data is stored in the storage section for the predetermined time from a last transmission of the positioning data, the receiving terminal transmits the positioning data to the arithmetic processor and continues to acquire the positioning data, and when the received analysis result is determined as good, the receiving terminal completes the positioning of the positioning target location.

2. The positioning system according to claim 1, wherein when receiving no positioning data from the receiving terminal within a certain time period and receiving the positioning data from the receiving terminal thereafter, the arithmetic processor stores the positioning data as new analysis data in place of the analysis data stored in the storage section prior to the reception, analyzes the new analysis data in the analyzing section, and transmits the analysis result to the receiving terminal.

3. The positioning system according to claim 1, wherein the receiving terminal includes a movement detection section that is capable of detecting that a location of the receiving terminal itself is moved, when the movement detection section detects that the location of the receiving terminal itself is moved, the receiving terminal cancels the positioning of the positioning target location regardless of a determination result of the good-or-poor determining section.

4. The positioning system according to claim 1, wherein after an elapse of a certain time period from the time when the positioning of the positioning target location is started, the receiving terminal cancels the positioning of the positioning target location regardless of a determination result of the good-or-poor determining section.

5. A receiving terminal comprising the positioning system according to any one of claims 1 to 4.

6. A positioning method comprising:

preparing a receiving terminal having a storage section capable of storing positioning data acquired from a satellite for a predetermined time;

preparing an arithmetic processor capable of analyzing positioning data acquired from a satellite; and

preparing a communication unit enabling communication between the arithmetic processor and the receiving terminal, the positioning system being capable of positioning of a positioning target location by placing the receiving terminal at the positioning target location in a fixed manner, wherein

the arithmetic processor comprises;

a storage section that is capable of storing, as analysis data, the positioning data received from the receiving terminal; and

an analyzing section that is capable of analyzing the analysis data stored in the storage section, the arithmetic processor, upon reception of the positioning data from the receiving terminal, accumulates the received positioning data on the analysis data stored in the storage section prior to the reception, stores the thus accumulated data as new analysis data, analyzes the new analysis data in the analyzing section and then transmits an analysis result to the receiving terminal,

the receiving terminal comprises;

a good-or-poor determining section that determines whether the analysis result received from the arithmetic processor is good or poor, the receiving terminal, once the positioning data is stored in the storage section for the predetermined time from an acquisition start time, transmits the positioning data to the arithmetic processor and continues to acquire the positioning data, and upon reception of the analysis result of the analysis data from the arithmetic processor, the receiving terminal determines whether the received analysis result is good or poor using the good-or-poor determining section, when the received analysis result is determined as poor and the positioning data is stored in the storage section for the predetermined time from a last transmission of the positioning data, the receiving terminal transmits the positioning data to the arithmetic processor and continues to acquire the positioning data, and when the received analysis result is determined as good, the receiving terminal completes the positioning of the positioning target location.

7. The positioning method according to claim 6, wherein when receiving no positioning data from the receiving terminal within a certain time period and receiving the positioning data from the receiving terminal thereafter, the arithmetic processor stores the positioning data as new analysis data in place of the analysis data stored in the storage section prior to the reception, analyzes the new analysis data in the analyzing section, and transmits the analysis result to the receiving terminal.

8. The positioning method according to claim 6, wherein the receiving terminal includes a movement detection section that is capable of detecting that a location of the receiving terminal itself is moved, when the movement detection section detects that the location of the receiving terminal itself is moved, the receiving terminal cancels the positioning of the positioning target location regardless of a determination result of the good-or-poor determining section.

9. The positioning method according to claim 6, wherein after an elapse of a certain time period from the time when the positioning of the positioning target location is started, the receiving terminal cancels the positioning of the positioning target location regardless of a determination result of the good-or-poor determining section.