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33 results for tags space x
  • The Inmos Legacy - transputer links and SpaceWire
    After reading https://forums.theregister.com/forum/all/2022/05/06/pi_pico_transputer_code/, I was looking for information related to transputers and found this page.

    The point-to-point technology to link transputers was formalised in the IEEE 1355 standard. This was further developed under the ESA into SpaceWire, which is now designed into a number of space missions under development in Europe, the USA and Japan. A key player in developing SpaceWire was Paul Walker from the transputer team whose company, 4Links, is now selling SpaceWire test equipment.

    XMOS mentioned on the page can be found on https://www.xmos.ai
    Tue Jan 24 10:21:40 2023 - permalink -
    - http://www.inmos.com/inmos_legacy.html
    computer electronics history space
  • Predict when the Moon is illuminated by the French GRAVES space surveillance radar.
    Found via the author's blog https://www.dl1ye.com/posts/2021-04-29-universal-lnb-biastee/ which in turn was found when searching for a bias tee.
    Fri Nov 25 23:17:05 2022 - permalink -
    - https://gitlab.com/knightshrub/graves
    physics Python software space
  • GMAT Wiki - Confluence
    The General Mission Analysis Tool (GMAT) is an open-source space mission analysis tool. Found via https://destevez.net/2022/09/more-qo-100-orbit-determination/
    Thu Oct 20 16:39:37 2022 - permalink -
    - https://gmat.atlassian.net/wiki/spaces/GW/overview?homepageId=380273216
    FOSS physics software space
  • Wayfinder: an open-access and near real-time visualization of satellites and debris in Earth orbit.
    Found via an ad, Omega is teaming with Privateer https://gothammag.com/omega-privateer-space-travel-junk-wayfinder
    Thu Apr 7 22:34:36 2022 - permalink -
    - http://www.privateer.com/
    on-line science space
  • F´ A Flight Software and Embedded Systems Framework
    F´ (or F Prime) is a software framework for the rapid development and deployment of embedded systems and spaceflight applications. Originally developed at NASA’s Jet Propulsion Laboratory, F´ is open-source software that has been successfully deployed for several space applications. It has been used for but is not limited to, CubeSats, SmallSats, instruments, and deployable.
    Thu Jun 24 16:55:21 2021 - permalink -
    - https://nasa.github.io/fprime/
    C++ NASA software space
  • NASA/JPL Eyes
    Digital orrery, showing planets, moons, asteroids and some spacecraft.
    Thu Feb 18 23:13:21 2021 - permalink -
    - https://eyes.nasa.gov/apps/orrery/#/home?time=2021-02-18T22:11:15.164+00:00
    astronomy NASA science space
  • Spektrum Kompakt Im Orbit - Unterwegs in der Erdumlaufbahn
    Sun Dec 13 21:55:55 2020 - permalink -
    - https://www.spektrum.de/pdf/spektrum-kompakt-im-erdorbit/1712030
    german reading space
  • Reading List: Sunburst and Luminary
    Review of
    Eyles, Don. Sunburst and Luminary. Boston: Fort Point Press, 2018. ISBN 978-0-9863859-3-3.
    http://www.sunburstandluminary.com/SLhome.html

    The next blog entry is interesting as well.
    https://www.fourmilab.ch/fourmilog/archives/2019-11/001848.html
    Crossfield, Albert Scott and Clay Blair. Always Another Dawn. Seattle, CreateSpace, [1960] 2018. ISBN 978-1-7219-0050-3.
    Wed Dec 18 17:15:24 2019 - permalink -
    - https://www.fourmilab.ch/fourmilog/archives/2019-11/001849.html
    AGC blog book computer history space
  • Jim's Notes: Apollo Virtual AGC for Raspbian on Raspberry Pi 4
    Brief description of a failed attempt to install the virtual AGC
    from https://www.ibiblio.org/apollo/ on a Raspberry π 4 running Raspian.
    Thu Dec 12 13:37:41 2019 - permalink -
    - https://jim-st.blogspot.com/search/label/apollo
    AGC computer history pi raspberry space π
  • General Mission Analysis Tool (GMAT) Wiki Home
    GMAT is designed to model, optimize, and estimate spacecraft trajectories in flight regimes ranging from low Earth orbit to lunar applications, interplanetary trajectories, and other deep space missions. Analysts model space missions in GMAT by first creating resources such as spacecraft, propagators, estimators, and optimizers.
    Fri Oct 18 17:57:59 2019 - permalink -
    - http://gmatcentral.org/
    FOSS physics software space
  • Apollo 11 in Real Time
    A real-time journey through the first landing on the Moon
    This website consists entirely of original historical mission material
    Sun Aug 11 23:31:51 2019 - permalink -
    - https://apolloinrealtime.org/11/
    history space
  • St Kwan's Home for the Terminally ADD: Radiation-pressure propulsion for nano-spacecraft
    Abstract: The Breakthrough Starshot project proposes using radiation-pressure propulsion to send multiple spacecraft in the gram-range mass to interstellar targets. There are numerous engineering challenges to accomplishing this mission, but their project discusses speeds and accelerations previously only discussed for cannon projectiles and particle physics experiments. This article examines the problem from first principles to see if the project is even orders-of-magnitude possible. A preliminary check on their numbers seems to confirm that the project is possible in principle.
    https://stkwans.blogspot.com/2012/04/program-66.html is about the Apollo guidance computer.
    https://stkwans.blogspot.com/2012/09/a-review-of-adxl345-and-bma180.html
    Tue Jul 2 19:45:49 2019 - permalink -
    - https://stkwans.blogspot.com/2016/08/radiation-pressure-propulsion-for-nano.html
    AGC blog physics space
  • What to expect when Beresheet launches to (and lands on) the Moon | The Planetary Society
    Includes a mission schedule.
    Sat Feb 23 01:31:25 2019 - permalink -
    - http://www.planetary.org/blogs/jason-davis/beresheet-what-to-expect.html
    moon space
  • Visual Satellite Observer's Home Page
    Information about visual satellite observation.
    Fri Jun 22 16:06:58 2018 - permalink -
    - http://www.satobs.org/satintro.html
    astronomy physics space TODO
  • The CPU Shack - History of Microprocessors & CPU Technology
    CPU History Museum for Intel CPUs, AMD Processor, Cyrix Microprocessors, Microcontrollers and more.
    Also has information about processors used in space missions:
    http://www.cpushack.com/space-craft-cpu.html
    Mon Apr 16 10:46:21 2018 - permalink -
    - http://www.cpushack.com/
    computer hardware history space
  • iDSKY
    Simulation of the Apollo Guidance Computer (AGC) and its display/keyboard (DSKY).
    Sat Feb 3 14:51:33 2018 - permalink -
    - http://idsky.genedorr.com/iDSKY.html
    computer history JavaScript space
  • Virtual AGC (Apollo guidance computer) Home Page
    The purpose of this project is to provide a computer simulation of the onboard guidance computers used in the Apollo Program's lunar missions, and to generally allow you to learn about these guidance computers.
    See also the source code at https://github.com/chrislgarry/Apollo-11/
    Wed Jan 24 14:40:19 2018 - permalink -
    - http://www.ibiblio.org/apollo/index.html
    AGC computer history software space
  • FlightLM
    An AGC (Apollo guidance computer) emulator written in C++. The package contains only the emulator.
    Wed Jan 24 14:39:16 2018 - permalink -
    - http://www.calsoft.de/%7Echristian/AGC/
    AGC computer history software space
  • Daniel Estévez – Electronics, ham radio and more
    Has a number of interesting articles, for example

    Trying to find the DSLWP-B crash site, calculation of the impact location of the DSLWP-B spacecraft.
    https://destevez.net/2019/08/trying-to-find-the-dslwp-b-crash-site/#more-7025

    Detailed description of decoding telemetry from Voyager 1 received  2015-12-30 with the Green Bank radio telescope.
    https://destevez.net/2021/09/decoding-voyager-1/
    And some more recent data
    https://destevez.net/2021/12/more-data-from-voyager-1/

    Analysis of the Ephemeris quality during the Galileo outage in July 2019.
    https://destevez.net/2019/09/ephemeris-quality-during-the-galileo-outage/
    https://destevez.net/2019/08/galileo-outage-revisited/

    Other articles related to satellite navigation
    https://destevez.net/2022/03/a-rust-implementation-of-galileo-osnma/
    https://destevez.net/2022/03/timing-sdr-recordings-with-gps/
    https://destevez.net/2019/11/measuring-the-allan-deviation-of-a-gpsdo-with-an-sdr/

    The following articles contain information about the Pluto SDR
    https://destevez.net/2022/09/connecting-the-pluto-sdr-to-an-android-phone/
    https://destevez.net/2022/08/calculating-the-qo-100-beacons-frequency-separation/

    Details of the Reed-Solomon code used by Voyager
    https://destevez.net/2021/12/voyager-1-and-reed-solomon/
    https://destevez.net/2022/02/an-error-in-the-dsn-telecommunications-link-design-handbook-description-of-reed-solomon/

    List of RF recordings
    https://destevez.net/rf-recordings/
    Tue Nov 8 22:38:39 2016 - permalink -
    - http://destevez.net/
    Berlekamp blog GNU physics radio Reed satellite-navigation software Solomon space
  • Stuff in Space
    Graphical demonstration of space debris.
    Tue Jul 14 13:14:05 2015 - permalink -
    - http://stuffin.space/
    graphical-programming physics space
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