Geolocation using guided surface waves
First Claim
1. A system, comprising:
- a charge terminal elevated over a lossy conducting medium;
a receiver network coupled between the charge terminal and the lossy conducting medium, the receiver network having a phase delay (Φ
) that matches a wave tilt angle (Ψ
) associated with a guided surface wave having a wave front incident at a complex Brewster angle of the lossy conducting medium, the wave tilt angle (Ψ
) based at least in part upon characteristics of the lossy conducting medium in a vicinity of a guided surface wave receive structure;
a compass;
a processor;
a memory; and
an application stored in the memory and executable by the processor, wherein the application causes the system to perform at least the following actions when executed by the processor;
receive a guided surface wave using the guided surface wave receive structure;
receive a reflection of the guided surface wave using the guided surface wave receive structure;
calculate an amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave;
measure an angle between a wave front of the guided surface wave and a polar axis of the Earth; and
determine a location of the guided surface wave receive structure based at least in part on;
the angle between the wave front of the guided surface wave and the polar axis of the Earth; and
the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave.
5 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are various approaches for navigation identifying one'"'"'s current position. A navigation device receives a guided surface wave using a guided surface wave receive structure. The navigation device then receives a reflection of the guided surface wave using the guided surface wave receive structure. The navigation device calculates an amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave. The navigation device then measures an angle between a wave front of the guided surface wave and a polar axis of the Earth. Finally the navigation device determines a location of the guided surface wave receive structure based at least in part on the angle between the wave front of the guided surface wave and the polar axis of the Earth the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave.
132 Citations
20 Claims
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1. A system, comprising:
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a charge terminal elevated over a lossy conducting medium; a receiver network coupled between the charge terminal and the lossy conducting medium, the receiver network having a phase delay (Φ
) that matches a wave tilt angle (Ψ
) associated with a guided surface wave having a wave front incident at a complex Brewster angle of the lossy conducting medium, the wave tilt angle (Ψ
) based at least in part upon characteristics of the lossy conducting medium in a vicinity of a guided surface wave receive structure;a compass; a processor; a memory; and an application stored in the memory and executable by the processor, wherein the application causes the system to perform at least the following actions when executed by the processor; receive a guided surface wave using the guided surface wave receive structure; receive a reflection of the guided surface wave using the guided surface wave receive structure; calculate an amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave; measure an angle between a wave front of the guided surface wave and a polar axis of the Earth; and determine a location of the guided surface wave receive structure based at least in part on; the angle between the wave front of the guided surface wave and the polar axis of the Earth; and the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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receiving a guided surface wave travelling along a terrestrial medium using a guided surface wave receive structure, the guided surface wave having a wave front incident at a complex Brewster angle of the terrestrial medium; receiving a reflection of the guided surface wave using the guided surface wave receive structure; calculating an amount of time elapsed between receiving the guided surface wave and receiving the reflection of the guided surface wave; measuring an angle between the wave front of the guided surface wave and a polar axis of the Earth; and determining a location of the guided surface wave receive structure based at least in part on; the angle between the wave front of the guided surface wave and the polar axis of the Earth; and the amount of time elapsed between receiving the guided surface wave and receiving the reflection of the guided surface wave. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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a guided surface wave receive structure configured to obtain electrical energy from a guided surface wave traveling along a terrestrial medium, the guided surface wave having a wave front incident at a complex Brewster angle of the terrestrial medium; a processor; a memory; a compass; and an application stored in the memory that, when executed by the processor, causes the apparatus to at least; receive a guided surface wave using the guided surface wave receive structure; receive a reflection of the guided surface wave using the guided surface wave receive structure; calculate an amount of time elapsed between receiving the guided surface wave and receiving the reflection of the guided surface wave; measure an angle between a wave front of the guided surface wave and a polar axis of the Earth; and determine a location of the guided surface wave receive structure based at least in part on; the angle between the wave front of the guided surface wave and the polar axis of the Earth; and the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification