Method and apparatus continously offsetting survey points by half angle calculations in real time in the field
First Claim
1. In a mobile surveying device, a method of determining an offset path offset from an actual path, the method comprising the steps of:
- measuring a sequence of continuous measured points along the actual path, wherein the sequence of continuous measured points are generated using a satellite positioning system included with the mobile surveying device;
assigning sequentially a preceding, a middle and a subsequent measured point in the sequence of continuous measured points; and
computing an offset point of the offset path corresponding with the middle measured point immediately after the subsequent point is measured, the offset point being computed using a half-angle calculation relative to an angle defined by the middle measured point and the preceding and subsequent measured points.
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Accused Products
Abstract
A method and apparatus for determining an offset path from an actual path using a mobile surveying device. In one embodiment, a sequence of continuous measured points is generated using a satellite positioning system included with the disclosed mobile surveying device. Offset points are computed relative to the measured points using half angle calculations. Each offset point is computed relative to the middle point of three continuous measured points generated by the satellite positioning system along the actual path. The offset points are continuously generated with the mobile surveying device in real time and in the field.
16 Citations
20 Claims
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1. In a mobile surveying device, a method of determining an offset path offset from an actual path, the method comprising the steps of:
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measuring a sequence of continuous measured points along the actual path, wherein the sequence of continuous measured points are generated using a satellite positioning system included with the mobile surveying device; assigning sequentially a preceding, a middle and a subsequent measured point in the sequence of continuous measured points; and computing an offset point of the offset path corresponding with the middle measured point immediately after the subsequent point is measured, the offset point being computed using a half-angle calculation relative to an angle defined by the middle measured point and the preceding and subsequent measured points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile surveying device for determining an offset path from an actual path, the mobile surveying device comprising:
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satellite positioning system circuitry configured to generate a sequence of continuous measured points along the actual path;
the sequence of continuous measured points including preceding, middle and subsequent measured points;computation circuitry coupled to receive the preceding, middle and subsequent measured points, the computation circuitry further coupled to receive an offset distance and an offset direction, the computation circuitry configured to compute an offset point immediately after the subsequent measured point is generated, the offset point being computed using a half-angle calculation relative to an angle defined by the middle measured point, the preceding and subsequent measured points; and memory circuitry coupled to the computation circuitry for storing the offset point. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification