TPA ratings and limitations
Passive trajectography using angle measurement

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TE6705 V1 Article

TPA ratings and limitations


Passive trajectography using angle measurement

Authors : Denis PILLON, Claude JAUFFRET

Publication date: February 10, 2005 | Lire en français

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3. TPA ratings and limitations

3.1 Putting the problem into equation

Passive trajectography using angle measurement alone used to be called "azimetry" in France. This term has been banned as a false friend: TPA is in no way an azimuth measurement, as one might think with this concatenation of the prefix azimut and the term métrie. The English equivalent of TPA is bearing only tracking target motion analysis (BOT-TMA). It's unambiguous, but longer.

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3.1.1 Assumptions

Let's list the assumptions of this problem:

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