Geodetic Coordinates: Computing Latitude and Longitude

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  • เผยแพร่เมื่อ 22 ธ.ค. 2024

ความคิดเห็น • 57

  • @ChristopherLum
    @ChristopherLum  4 ปีที่แล้ว +2

    In case it is helpful, here are all the Flight Mechanics videos in a single playlist th-cam.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html. You can support this channel via Patreon at www.patreon.com/christopherwlum. Please let me know what you think in the comments. Thanks for watching!

  • @armaisdiaz
    @armaisdiaz 4 ปีที่แล้ว +7

    As an aerospace engineer I must thank you to help me remember all this terms as they are pretty useful to me. Great video, accurate and very well explained.

    • @ChristopherLum
      @ChristopherLum  4 ปีที่แล้ว

      I'm glad it was helpful. There are several related videos on the channel. Please feel free to check them out and I would love to hear what you think in the comments. Thanks for watching!

  • @NicholasRehm
    @NicholasRehm 2 ปีที่แล้ว

    Very familiar with these topics, but new to simulink--love your style of teaching and showing, thanks!

    • @ChristopherLum
      @ChristopherLum  2 ปีที่แล้ว

      Hi Nicholas,
      Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. Thanks for watching!
      -Chris

  • @falgunsukhija2672
    @falgunsukhija2672 3 ปีที่แล้ว +1

    Thank you so much! I am teaching myself astronomy right now and your video was the only place i could find the difference between geodetic and geocentric latitude mentioned clearly

    • @mikefochtman7164
      @mikefochtman7164 11 หลายเดือนก่อน +1

      I play around with celestial navigation and this is a fine point that I've wondered. Since maritime navigators measure the star elevation from the local horizontal, I think the positions given in Nautical Almanacs use a 'geodetic declination'?!? Instead of east-west longitude we use hour-angles which are always measured easterly up to 24 hours. And of course we use a point in the constellation Aries as 'prime meridian' in the celestial sphere.

  • @smahmud1839
    @smahmud1839 4 ปีที่แล้ว +1

    I am currently pursuing a course on satellite positioning. This video helped me a lot to understand Meridian Radius of curvature and prime vertical radius of curvature. Thanks a lot Mr. Lum.

  • @jordantriolo571
    @jordantriolo571 6 หลายเดือนก่อน

    AE512: Nice to see a simple explanation on geodetic vs geocentric latitude

  • @milesrobertroane955
    @milesrobertroane955 9 หลายเดือนก่อน

    AA516: Good video, I am excited to get this visualized!

  • @aimeepak717
    @aimeepak717 6 หลายเดือนก่อน

    AE512: I really appreciate the block diagrams on the white board. It really helps with developing the simulink model. :)

  • @sebastianvaroncrews3634
    @sebastianvaroncrews3634 4 ปีที่แล้ว +2

    Fantastic video! I love your channel now :)

  • @CungToi
    @CungToi 5 หลายเดือนก่อน

    Dear Professor, 12:57 I think M should correspond to the minimum radius of curvature and N is the opposite.

  • @AliRazaTajamal
    @AliRazaTajamal 3 ปีที่แล้ว

    Amazing stuff. Looking forward to navigation equations

  • @zaneyosif
    @zaneyosif 6 หลายเดือนก่อน

    AE512: Great video! I can see how using the RCAM model to output lat/long/altitude can be used to develop some sort of position tracking. Curious whether the desired convention to have our geodetic latitude as phi and that could get confused with our x_state of phi angle and how that is usually differentiated for the user

  • @emmanuelsheshi1553
    @emmanuelsheshi1553 3 ปีที่แล้ว

    thanks so much for these videos

  • @marcosszmania5874
    @marcosszmania5874 2 ปีที่แล้ว

    AE 512 - What is the name of the block you have used to create the Longitude Bound in min 29:31? Also, could you provide the formula for phi_dot (Geodetic Latitude dot) and lambda_dot (Terrestrial Longitude dot) ? Thanks.

    • @ChristopherLum
      @ChristopherLum  2 ปีที่แล้ว

      Marcos, this is something I coded up myself. You can do it using a MATLAB Fcn block

  • @jaziebart
    @jaziebart 3 ปีที่แล้ว

    AA 516 - At 16:10 in the video, is the 1/2 power applied to the entire quantity of the denominator of N?

    • @ChristopherLum
      @ChristopherLum  3 ปีที่แล้ว

      Alex, this is just a result of the geometry. You can see the derivation in Stevens and Lewis if you want to rederive but personally, I'd just use the equations and be done with it 😀

  • @ccball954
    @ccball954 6 หลายเดือนก่อน

    AE512: Important to remember the flat-earth vs. round-earth physics. Thanks-Christian Ball

  • @muhammedeminyavuzaslan9015
    @muhammedeminyavuzaslan9015 ปีที่แล้ว

    Hi Mr.Lum, im member of the patreon and im really happy about that. Can you share this simulink file with patreon members ? Thanks a lot

  • @MedullarisConus
    @MedullarisConus 3 ปีที่แล้ว +1

    You are amazing! Do you have a video talking about parans?

    • @ChristopherLum
      @ChristopherLum  3 ปีที่แล้ว +1

      I'm glad it was helpful. If you have video requests/ideas, you can submit them via www.patreon.com/christopherwlum. Thanks for watching!

  • @richardwilmarsalascaballer8746
    @richardwilmarsalascaballer8746 4 ปีที่แล้ว

    Por favor en este ejercicio podría reemplazar las formulas con coordenadas reales (números) porque me quedo la dudad con respecto a los vectores porque ud coloca las mismas incógnitas latitud, longitud y como que la elevación solo cambiaste de signo, no sé si será lo correcto

  • @ucontrolchannel5967
    @ucontrolchannel5967 4 ปีที่แล้ว +1

    Thank youuu verryyy much

  • @Aguvika
    @Aguvika 2 ปีที่แล้ว

    Please, do you have a link to a resource that sows how that equation is derived?

    • @ChristopherLum
      @ChristopherLum  2 ปีที่แล้ว

      Hi,
      Thanks for reaching out. If you have questions or would like to request a video, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. I'd love to have you as a Patron as I'm able to talk/interact personally with Patrons. Thanks for watching!
      -Chris

  • @edwardmau5877
    @edwardmau5877 6 หลายเดือนก่อน

    AE 512: What would be an application that uses geocentric latitude?

    • @ChristopherLum
      @ChristopherLum  6 หลายเดือนก่อน +1

      Great question. Sometimes this is helpful for converting between the ECEF frame (effectively going from cartesian to cylindrical coordinates).

  • @chayweaver.2995
    @chayweaver.2995 6 หลายเดือนก่อน

    AE512: are phi_dot and lambda_dot in radians or degrees per second?

    • @ChristopherLum
      @ChristopherLum  6 หลายเดือนก่อน

      Should be in rad/s but it has been a while since I looked at this. Let me know if you think it is deg/s

  • @edwinisdory3250
    @edwinisdory3250 4 ปีที่แล้ว

    Thank you very much. Can we have matlab file explained and constructed so as to run?

  • @oguzhancam4011
    @oguzhancam4011 4 ปีที่แล้ว

    Hi. How about making a video about system identification?

  • @alexzhen179
    @alexzhen179 3 ปีที่แล้ว

    AA 516: Hello Professor, I have a very stupid question here. What is the block you used in Simulink to contain a simple function? Thank you so much! Very great video. Getting excited about building my own flight simulation.

    • @alexzhen179
      @alexzhen179 3 ปีที่แล้ว

      I think I found the answer. Seems like MathWorks removed this block since the last version.

    • @ChristopherLum
      @ChristopherLum  3 ปีที่แล้ว

      @@alexzhen179 You might want to try the 'Matlab Fcn' block. Let me know if this isn't in the latest version.

    • @alexzhen179
      @alexzhen179 3 ปีที่แล้ว

      @@ChristopherLum MATLAB function block works fine in my version (2020b). I substitute all Fcns with the MATLAB functions. Thanks!

  • @Ricky.Ricardo
    @Ricky.Ricardo 3 ปีที่แล้ว

    Could you create a video on how to go from geocentric to geodetic coordinate system?

    • @ChristopherLum
      @ChristopherLum  3 ปีที่แล้ว

      Thanks for reaching out. If you have questions or would like to request a video, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum. I'd love to have you as a Patron as I'm able to talk/interact personally with Patrons. Thanks for watching!

  • @erickdiaz4048
    @erickdiaz4048 4 ปีที่แล้ว

    Mr. Lum, what is your favorite movie?

  • @fuelnfreedom
    @fuelnfreedom 3 ปีที่แล้ว

    Loved ur video nd ur way of explanation. Actually I'm working with a satellite data I'm just confused what's the value of altitude should I take like altitude at which satellite is revolving or altitude at which satellite is recording data like for this case study its 500m from surface

    • @ChristopherLum
      @ChristopherLum  3 ปีที่แล้ว

      Thanks for catching this you are correct!

  • @ojasvikamboj6083
    @ojasvikamboj6083 ปีที่แล้ว

    A A 516: Ojasvi Kamboj

  • @davidtelgen8114
    @davidtelgen8114 6 หลายเดือนก่อน

    AE512: I'm surprised no flat earthers have found this video yet, their comments are always...entertaining 😆

    • @ChristopherLum
      @ChristopherLum  6 หลายเดือนก่อน

      Haha, I know. They seemed to have found the video on Coriolis Effect and had some choice comments. Also TH-cam automatically tagged the video on the 'Flat Earth Equations of Motion' as being mis-information :)

  • @syedmdabid7191
    @syedmdabid7191 11 หลายเดือนก่อน

    Geodetic latitude= tan^--1 ( b/a tan α. ( α=Geocentric latitude, a, b major and minor axis of the EARTH)

  • @daniellerogers5959
    @daniellerogers5959 ปีที่แล้ว

    AA516

  • @Po-ChihHuang
    @Po-ChihHuang 9 หลายเดือนก่อน

    AA516:Po

  • @dinomoviesnstuff
    @dinomoviesnstuff 3 ปีที่แล้ว

    What???

  • @petermay6090
    @petermay6090 9 หลายเดือนก่อน

    AA516

  • @yaffetbedru6612
    @yaffetbedru6612 9 หลายเดือนก่อน

    AA516