Integrated apparatus and method for EDM and GPS surveying
First Claim
1. An electronic distance measurement (EDM) apparatus (41), for attachment to a surveying range pole (42) for reflecting a light beam (56), comprising:
- a housing having a circular exterior (46) concentric with a vertical center axis (48) of said range pole (42); and
a reflective outer surface (54) encircling said circular exterior (46) for reflecting said light beam (56) over an angular azimuth range of 360°
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3 Assignments
0 Petitions
Accused Products
Abstract
An electronic distance measurement EDM apparatus (41) for attachment to a range pole (42), having a GPS antenna (12) having a circular exterior (46) with a reflective outer surface (54) for reflecting an EDM light beam (56) over an angular azimuth range of 360°. The reflective outer surface (54) is a thin material such as tape or paint. A GPS receiver (16) connects to the GPS antenna (12) for providing a GPS-derived location of a phase center (18) of the GPS antenna (12). An optional radio transmitter (20) transmits information for the GPS-derived location in a GPS location data signal (22). An optional radio receiver (24) receives a differential GPS (DGPS) correction signal (26) and/or a GPS real time kinematic signal (28) for use in improving the accuracy of calculation of the GPS-derived location. An integrated global positioning system / electronic distance measurement (GPS/EDM) surveying system (40) includes the EDM apparatus (41), the range pole (42), and a total station (58). The total station (58) calculates a range by beaming the EDM light beam (56) to the reflective outer surface (54) and receiving a reflection (62).
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Citations
22 Claims
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1. An electronic distance measurement (EDM) apparatus (41), for attachment to a surveying range pole (42) for reflecting a light beam (56), comprising:
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a housing having a circular exterior (46) concentric with a vertical center axis (48) of said range pole (42); and a reflective outer surface (54) encircling said circular exterior (46) for reflecting said light beam (56) over an angular azimuth range of 360°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An integrated global positioning system/electronic distance measurement (GPS/EDM) surveying system (40), comprising:
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a range pole (42) having a vertical center axis (48); an EDM apparatus (41) for attachment to the range pole (42) including a housing (44) including a circular exterior (46) having a reflective outer surface (54) concentric with said center axis (48);
a GPS antenna (12) having a phase center (18) on said center axis (48) for receiving a GPS satellite signal (14) and providing an antenna output signal representative of said GPS satellite signal (14); and
a GPS receiver (16) coupled to the GPS antenna (12) for receiving said antenna output signal and providing information for a GPS-derived location of said phase center (18); anda total station (58) for transmitting a light beam (56) for illuminating said reflective outer surface (54), for receiving a reflection (62) of said light beam (56) from said reflective outer surface (54), and for calculating a range between the range pole (42) and the total station (58). - View Dependent Claims (13, 14, 15)
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16. A method for making an electronic distance measuring (EDM) apparatus (41) for attachment to a surveying range pole (42), including steps of:
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making a housing (44) having a circular exterior (46) for concentric attachment to said range pole (42) having a vertical center axis (48); and coating said circular exterior (46) with a reflective outer surface (54) for reflecting a light beam (56) over an angular azimuth range of 360°
about said center axis (48). - View Dependent Claims (17, 18, 19)
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20. A method for surveying including steps of:
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positioning a range pole (42) having an attached electronic measurement (EDM) apparatus (41) having a circular exterior (46) having a reflective outer surface (54) over an angular azimuth range of 360°
about a vertical center axis (48) over a first location (52),positioning a total station (58) over a second location (60); beaming a light beam (56) from said total station (58) to said reflective outer surface (54); receiving a reflection (62) of said light beam (54) from said reflective outer surface (54) with said total station (58); and calculating a range between said first location (52) and said second location (60) by comparing information in said light beam (56) beamed from said total station with information received in said reflection (62). - View Dependent Claims (21, 22)
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Specification