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 transmitted in a Zenneck waveguide mode, the wave tilt angle (Ψ
) based at least in part upon characteristics of the lossy conducting medium in a vicinity of the receiving structure;
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;
identify when a guided surface wave was received by the receiver network;
identify when a reflection of the guided surface wave was received by the receiver network;
calculate an amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the guided surface wave; and
determine a location of the system based at least in part on the amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the guided surface wave.
5 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are various embodiments for fixing a navigational position using guided surface waves launched from guided surface wave waveguide probes at various ground stations. A guided surface wave is received using a guided surface wave receive structure. A reflection of the guided surface wave is received using the guided surface wave receive structure. An amount of time that has elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave is calculated. A location of the guided surface wave receive structure is determined based at least in part on the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave.
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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 transmitted in a Zenneck waveguide mode, the wave tilt angle (Ψ
) based at least in part upon characteristics of the lossy conducting medium in a vicinity of the receiving structure;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; identify when a guided surface wave was received by the receiver network; identify when a reflection of the guided surface wave was received by the receiver network; calculate an amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the guided surface wave; and determine a location of the system based at least in part on the amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the 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 transmitted in a Zenneck waveguide mode using a guided surface wave receive structure; 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; and determining a location of the guided surface wave receive structure based at least in part on 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 receive a guided surface wave traveling along a terrestrial medium in a Zenneck waveguide mode; a processor; a memory; and an application stored in the memory that, when executed by the processor, causes the apparatus to at least; identify when a guided surface wave was received by the guided surface wave receive structure; identify when a reflection of the guided surface wave was received by the guided surface wave receive structure; calculate an amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the guided surface wave; and determine a location of the apparatus based at least in part on the amount of time elapsed between receipt of the guided surface wave and receipt of the reflection of the guided surface wave. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification