PathFinder Digital https://www.pathfinderdigital.com Satellite Communications Tue, 27 Oct 2020 02:41:41 +0000 en-US hourly 1 https://wordpress.org/?v=5.5.1 https://pathfinderdigital.s3.amazonaws.com/wp-content/uploads/20200110112941/PFD_icon.png PathFinder Digital https://www.pathfinderdigital.com 32 32 Consultative Committee for Space Data Systems (CCSDS) https://www.pathfinderdigital.com/consultative-committee-for-space-data-systems-ccsds https://www.pathfinderdigital.com/consultative-committee-for-space-data-systems-ccsds#respond Tue, 27 Oct 2020 02:41:05 +0000 https://www.pathfinderdigital.com/?p=1040 Overview The Consultative Committee for Space Data Systems (CCSDS) is a multinational forum formed in 1982 to discuss common problems in the development and creation of space communications systems. Today, the forum consists of the eleven major space agencies of the world and seeks to develop standards for communication and data systems in space. CCSDS…

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Cognitive Diversity Network https://www.pathfinderdigital.com/cognitive-diversity-network https://www.pathfinderdigital.com/cognitive-diversity-network#respond Tue, 20 Oct 2020 15:10:36 +0000 https://www.pathfinderdigital.com/?p=1036 Overview A cognitive diversity network (CDN) is an amalgamation of many different networking processes┬ácontributing to the operation of one network. “Cognitive diversity” is the difference in thinking, processing, and problem-solving styles among many individuals or groups. “Network” implies an interlinking of different technologies and methods, especially with regards to satellites and FSO. Therefore, “cognitive diversity…

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Speed Comparison: FSO vs Fiber https://www.pathfinderdigital.com/speed-comparison-fso-vs-fiber https://www.pathfinderdigital.com/speed-comparison-fso-vs-fiber#respond Fri, 16 Oct 2020 15:02:07 +0000 https://www.pathfinderdigital.com/?p=1031 Overview Fiber-optic cables must be installed from one point to the next to enable optical communications. The quality of those cables is important to the performance of an optical communications system, as is the integrity of the splices between sections of optical cable. Whereas a fixed microwave link sends information through the air between two…

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Project Loon https://www.pathfinderdigital.com/project-loon https://www.pathfinderdigital.com/project-loon#respond Wed, 14 Oct 2020 18:09:45 +0000 https://www.pathfinderdigital.com/?p=1029 Overview Google’s project division X has been developing a balloon technology known as Project Loon to increase connectivity across the globe. They are partnered with various mobile companies to extend their coverage to places previously not possible. Project Loon’s solution is to place a web of communication technologies, which are comprised of the parts of…

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Cooperative Diversity https://www.pathfinderdigital.com/cooperative-diversity https://www.pathfinderdigital.com/cooperative-diversity#respond Thu, 08 Oct 2020 20:19:06 +0000 https://www.pathfinderdigital.com/?p=1018 Overview Cooperative diversity (CD) is a physical hardware arrangement technique that uses multiple antennas to improve a network’s total channel capacity for any set of bandwidths. In traditional “single hop” antenna systems, a receiver obtains a direct signal from a source and sends the information to that antenna’s end user. Other signals are also received…

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Photon-per-Bit Receiver for Deep Space Communications https://www.pathfinderdigital.com/photon-per-bit-receiver-for-deep-space-communications https://www.pathfinderdigital.com/photon-per-bit-receiver-for-deep-space-communications#respond Fri, 02 Oct 2020 21:34:49 +0000 https://www.pathfinderdigital.com/?p=1015 Overview A team of researchers from the University of Chambers in Sweden has improved satellite receivers for deep space communications by reducing the signal to noise ratio which increases the sensitivity of the receiver. This improvement allows for multi- Gigabits per second data transmission with fewer photons within the nonlinearity of space. The team of…

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Luminescent Detector https://www.pathfinderdigital.com/luminescent-detector https://www.pathfinderdigital.com/luminescent-detector#respond Thu, 24 Sep 2020 13:30:52 +0000 https://www.pathfinderdigital.com/?p=1006 Overview The Connectivity Lab at Facebook has developed a new kind of optical detector for FSO communication. Their Luminescent Detector is designed to enable high-speed communication in places where it is a challenge to build more traditional equipment and infrastructure. Semiconductor photodiodes are generally used as detectors for FSO communication; however, there are a few…

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Deep-Space Optical Communications (DSOC) https://www.pathfinderdigital.com/deep-space-optical-communications-dsoc https://www.pathfinderdigital.com/deep-space-optical-communications-dsoc#respond Mon, 21 Sep 2020 20:24:40 +0000 https://www.pathfinderdigital.com/?p=1002 Overview DSOC, short for Deep Space Optical Communications, is a NASA laser-based space communications program which is still in the development phase. By the time of its implementation, DSOC will operate at 10 to 100 times the speed of current RF downlink/uplink speeds. NASA’s Jet Propulsion Laboratory (JPL) leads the project and aims to produce…

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Dynamic Routing (Adaptive Routing) https://www.pathfinderdigital.com/dynamic-routing-adaptive-routing https://www.pathfinderdigital.com/dynamic-routing-adaptive-routing#respond Thu, 17 Sep 2020 19:28:13 +0000 https://www.pathfinderdigital.com/?p=1000 Overview Dynamic routing, also called adaptive routing, is a process for optimizing how data is transmitted. It is comparable to taking the back roads through a city rather than the main road during rush-hour. [1] When a network’s primary transmission channel is clogged with data traffic, signals are routed to channels with lower data volume.…

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ETS (Engineering Test Satellite) https://www.pathfinderdigital.com/ets-engineering-test-satellite https://www.pathfinderdigital.com/ets-engineering-test-satellite#respond Tue, 08 Sep 2020 19:22:28 +0000 https://www.pathfinderdigital.com/?p=992 Overview Engineering Test Satellite (ETS) is a program name given to certain satellites launched by JAXA (formerly NASDA). The ETS name is followed by the appropriate Roman numeral to indicate the ETS’s program iteration. The program is currently on-going in Japan and has been around since 1975 with the launch of ETS-I. It is currently…

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