Approximate technique for calculating average time until a given high level is first crossed by a Gaussian random process

The problem of calculating the average time until a given high threshold level is first crossed by a Gaussian random process is considered. A technique for approximate estimation of this time for both nondifferentiable and differentiable Gaussian random processes is proposed; this technique can be used to solve some problems of flight dynamics in the conditions of atmospheric turbulence. The calculation results are compared with asymptotic estimates.