navigation - MATLAB Calculate time given Aircraft trajectory -

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i'm trying calculate cumulative time of aircraft trajectory given following parameters:

roll pitch trueheading headingrateofchange xvelocity yvelocity zvelocity latitude longitude altitude

the data file contains 10,000 points each of above parameters, representing trajectory @ each of points.

so far, have done calculate radial velocity squaring velocity components, summing them, , taking square root of sum i.e:

rvelocity = sqrt(vx.^2 + vy.^s + vz.^2) % 9999x1 column vector

then use matlab distance function calculate arclength distance:

al = distance(pt1,pt2,wgs84ellipsoid) % 9999x1 column vector

finally, divide al rvelocity:

time = al./rvelocity % 9999x1 column vector

after work, seems bogus answer... can recommend better way implement this?


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