Altitude Difference

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Altitude Difference

In navigation, the difference between computed and observed altitudes, or between precomputed and sextant altitudes. It is labeled T (toward) or A (away) as the observed (or sextant) altitude is greater or smaller than the computed (or precomputed) altitude. Also called altitude intercept, intercept .

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use