System for bidirectional free-space laser communication of gigabit Ethernet telemetry data

A communication system and optical communication technology, applied in the field of free space atmospheric laser communication system, can solve problems such as beam drift and optical system component design problems

Active Publication Date: 2016-10-26
THE BOEING CO
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Problems solved by technology

However, there are three main problems with the optical transmission of telemetry data: (1) Free-space laser communication has atmospheric turbulence effects that cause beam drift between the transmitter location and the receiver location
Issues (1) and (2) are inherent in free-space optical communications; issue (3) is a design issue for optical system components

Method used

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  • System for bidirectional free-space laser communication of gigabit Ethernet telemetry data
  • System for bidirectional free-space laser communication of gigabit Ethernet telemetry data
  • System for bidirectional free-space laser communication of gigabit Ethernet telemetry data

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Embodiment Construction

[0022] Various embodiments of a free-space laser communication system for GBE telemetry data will now be described in detail for purposes of illustration. At least some details relating to optical features or aspects disclosed below may be omitted in some applications without departing from the scope of the appended claims of the invention.

[0023] figure 1 are components illustrating a two-way free-space laser communication system for GBE telemetry data according to one embodiment. figure 1 The system shown includes a first laser communication system 100 on the ground and a second laser communication system 200 on a mobile platform such as an aircraft. However, those skilled in the art will recognize that laser communication systems 100 and 200 could be placed on the respective aircraft to enable air-to-air communication.

[0024] still refer to figure 1 , the laser communication system 100 includes a pointing / tracking / acquisition (PTA) telescope 122 , and the laser commu...

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Abstract

A free-space laser communication system for bidirectional transmission of telemetry data in Gigabit Ethernet (GBE) protocol using a dual atmospheric effect mitigation approach. This free-space bidirectional GBE laser communication system utilizes an Optical Combining Receiver Array and a Framer / Forward Error Correction / Interleaver (FFI) device to mitigate the combined effects of atmospheric turbulence and channel fading. Since the FFI device is designed for Synchronous Optical Network (SONET) protocol, an intelligent (or smart) media converter is used to convert GBE telemetry data to SONET frames, which enables the FFI device to perform an error correction algorithm and provide a seamless error-free GBE laser communication link for distance over a kilometer. This bidirectional laser communication system can be implemented with low-cost commercially available components.

Description

technical field [0001] The present disclosure relates generally to free space laser communication systems. More specifically, the present disclosure relates to free-space atmospheric laser communication systems with faulty control circuits. Background technique [0002] Telemetry is the automated communication process by which additional data collected at remote or inaccessible points is measured and transmitted to a receiving device for monitoring. For example, it is known to acquire telemetry data on board an aircraft and then transmit this data to a receiver on the ground in response to remote control commands from the ground. One existing solution employs a radio frequency (RF) link to transmit telemetry data between the aircraft and the ground station. Disadvantages of using an RF link include low data rates and susceptibility to electromagnetic interference. [0003] Optical communication systems for free-space atmospheric lasers transmit and receive information by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/60H04B10/11H04B10/67H04J3/06
CPCH04B10/11H04B10/60H04B10/677H04J3/0623H04B10/1125H04B10/1129H04B10/112
Inventor 埃里克·延-尤·钱乔纳森·M·圣克莱尔
Owner THE BOEING CO
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