Wen-Fan-Chen expressions

I will base Directional Precision on a simplication of the Wen-Fan-Chen expressions, which in their full form allow the exact computation of position errors for networks of any number of non-identical detectors.

Wen and Chen [8] show that the solid angle uncertainty is given by

http://arxiv.org/PS_cache/arxiv/pdf/1102/1102.5421v2.pdf

如果当初。。

满是悔恨。。