Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Did Arthur C. Clarke Predict GPS?
Science fiction writer Arthur C. Clarke described a satellite-based system "whereby anyone on earth could locate himself" in this letter dated August, 1956. Was Clarke the first person to figure out the basic idea for the Global Positioning System - GPS?
(Clarke describes GPS)
...My general conclusions are that perhaps in 30 years the orbital relay system may take over all the functions of existing surface networks and provide others quite impossible today. For example, the three stations in the 24-hour orbit could provide not only an interference and censorship-free global TV service for the same power as a single modern transmitter, but could also make possible a position-finding grid whereby anyone on earth could locate himself by means of a couple of dials on an instrument about the size of a watch. (A development of Decca and transistorisation.) It might even make possible world-wide person-to-person radio with automatic dialling. Thus no-one on the planet need ever get lost or become out of touch with the community, unless he wanted to be. I'm still thinking about the social consequences of this!But as for details of frequencies and powers, I'll have to leave that to the experts to work out; I'll get on with my science fiction and wait to say "I told you so!"
Sincerely,
Arthur C Clarke
As far as I know, the first working satellite navigation system was called TRANSIT or NAVSAT (Navy Navigation Satellite System). This system was developed by the US Navy to help ballistic missile submarines locate themselves. TRANSIT was developed starting in 1958, soon after Sputnik was launched. In late 1957, Johns Hopkins University Applied Physics Laboratory scientists analyzed the Doppler shift of Sputnik's signal to determine its orbit. Frank McClure, the chairman of APL's Research Center, suggested that if the satellite's position were known and predictable, the Doppler shift could be used to locate a receiver on Earth. TRANSIT went into operation in 1964 following the testing and launch of the ten necessary satellites (at any given time, five were required for operation).
Also, read more about Clarke's geosynchronous satellite idea, which did seem to have some real-world implications as well.
From Letters of Note via Dvice.
Scroll down for more stories in the same category. (Story submitted 7/28/2010)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 4 )
Related News Stories - (" Space Tech ")
Japan's LignoSat Space Wood Satellite And Dan Simmons' Treeship
'The Consul remembered his first glimpse of the kilometer-long treeship...' - Dan Simmons, 1989.
Is It Time For Lunar Farside Telescopes?
'Mount Ambarzumian Observatory, on Farside.' - Poul Anderson, 1958.
Spaceflight Vertigo Solved By NASA Releasing The Kraken
"I threw up in my helmet."
Lunar Pogo Stick - Retro Technovelgy From 1968
'Lucky touched the leap knob...' - Isaac Asimov, 1954.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
ESTHER Tennis Robot V. Fact (1934) And Fiction (1952)
'THE red tennis robot scooted desperately across the court...'
Japan's LignoSat Space Wood Satellite And Dan Simmons' Treeship
'The Consul remembered his first glimpse of the kilometer-long treeship...'
Skyline Robotics Instantiates Heinlein's 'Window Willie' Skyscraper Robot
'Do you know what window washing used to cost by the hour?'
Drone Bombings In Moscow Foreseen 100 Years Ago
'Once the target is confirmed, it uses an IR laser to send a coded signal back to the parent, clearing it to attack.'
I Didn't Know You Can Already Buy Flesh Putty
'I filled your bullet hole with flesh putty and the lattice.'
'A Sign in Space' Gives Practice In Decoding ET Messages
'... it will be easy to form an alphabet which shall enable us to converse with the inhabitants of the moon.'
Melting Permafrost Endangers Infrastructure
'From the tower's huge octagonal base radiate wide silvery strips...'
EELS Exobiology Extant Life Surveyor For Enceladus
'It was about five feet long... a black bullet head and red camera eyes.'
Lazy Lawyer's Trust In ChatGPT Misplaced
'The Law Society has strict rules on the use of pseudo-intelligent software...'
Paradromics Implant FDA 'Breakthrough Device'
'I used my implant to tell MILLIE what we wanted...'
Mice, At Least, Can Sober Up Quickly
'Then draw some aldodote-vitamin pills from the medic.'
Is It Time For Lunar Farside Telescopes?
'Mount Ambarzumian Observatory, on Farside.'
Spaceflight Vertigo Solved By NASA Releasing The Kraken
"I threw up in my helmet."
TM-62 Loitering Ground Landmine
Runaway movie comes to life!
Helpful Robots In Science Fiction
'If you douse me again... I'm donating you to a city college.'
Lunar Pogo Stick - Retro Technovelgy From 1968
'Lucky touched the leap knob...'
