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。。