A radar altimeter emits a pulse whose variation of power with time is Gaussian with a length

Question:

A radar altimeter emits a pulse whose variation of power with time is Gaussian with a length of 3.00 ns between 1/e points. The pulse is reflected from a surface whose height distribution is Gaussian with a range of 1.00 m between the 1/e points. Calculate the time for the reflected pulse to rise from 8% to 92% of its final value, neglecting coherence effects.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...