How to get the aircraft location from a flight path plot?

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Jayden Yeo 2021-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/1457434-how-to-get-the-aircraft-location-from-a-flight-path-plot

评论： Jayden Yeo 2021-9-23

I have the below data (dummy data) of a aircraft flight path, with the time, latitude. longitude and heading of the aircraft in a table.

The actual data consists of more than 100k rows, and file is too big to be uploaded.

Based on the actual data, I am able to plot the flight path on a map. The flight path map has an x-axis of Longitude and y-axis of Latitude. Problem is if I want to know the location of the aircraft at a particular time (say at 7220sec), how can I get the latitude, longitude and heading of the aircraft from the plot?

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采纳的回答

Chunru 2021-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/1457434-how-to-get-the-aircraft-location-from-a-flight-path-plot#answer_791739

在 MATLAB Online 中打开

% Generate some data
t = (7020:210:10080)';
lon = 102.915 - t/10080;
lat = 1.363 - t/20000;
heading = 153 + t/50040;
% Create an interpolant
F = griddedInterpolant(t, [lon lat heading]);
t = 8024;
F(t)  % lat lon heading
ans = 1×3
  102.1190    0.9618  153.1604

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Chunru 2021-9-22

在 MATLAB Online 中打开

data.mat

load data
whos
  Name          Size            Bytes  Class                 Attributes

  F             1x1               976  griddedInterpolant              
  ans           1x3                24  double                          
  heading      15x1               120  double                          
  lat          15x1               120  double                          
  lon          15x1               120  double                          
  t            15x1               120  double                          
                      
%T = table(t, lat, lon, heading)
% Create an interpolant
F = griddedInterpolant(t, [lon lat heading]);
tq = 8024;
F(tq)  % lat lon heading  
ans = 1×3
  102.1190    0.9618  153.1604
% If you have problem with griddedInterpolant on older version MATLAB
% you can try the following
z = interp1(t, [lon lat heading], tq)
z = 1×3
  102.1190    0.9618  153.1604

Jayden Yeo 2021-9-23

Thanks a lot. The command line "z = interp1(t, [lon lat heading], tq)" works.

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