New frequency spectrum estimation for the Spacial Transient Optical

Based on Alpha Stable Distribution, the frequency features of the optical transient signal are analyzed. The result is that the signal of Spatial Transient Optical is a random signal. Using the estimations FLOM covariation-Spectrum, this method is not applicable when the value of Alpha is below 1. A method of the estimation of FLOC is proposed, and the comparison of two spectrum estimations on results of emulator shows that the method proposed in this article presents a good capability and it can be widely applied to Alpha-stable distribution. Especially when the value of Alpha is small, the method of FLOC spectrum estimation has an incomparable advantage.