Frequency distribution

Estimating the flood frequency distribution

The goal of this study is to develop an objective methodology for estimating design floods, i.e. the flood peak discharge with return period T , at ungauged river catchments in Iceland. First, a regional flood frequency analysis is presented for estimating the T -year flood peak discharge with fixed duration D, Q(T,D), for poorly gauged and ungauged catchments. This is done by scaling a regiona...

General Time-Frequency Distribution Series

In this paper, we present a new and robust method, general time-frequency distribution series (TFDS), for time-frequency analysis. We also introduce the concept of local interference and global interference and show that the local interference is important and the global interference is less important in TF analysis. The TFDS is very general. With only one parameter, order of the TFDS, one can ...

Distribution of an Ultrastable Frequency Reference Using Optical Frequency Combs

Distribution of Standard Frequency and Time Signals

This paper reviews the present methods of distributing standard frequency and time signals (SFTS), which include the use of high-frequency, low-frequency, and very-low-frequency radio signals, portable clocks, satellites, and RF cables and Lines. The range of accuracies attained with most of these systems is included along with an indication of the sources of error. Information is also included...

Compensated Fiber-optic Frequency Distribution Equipment

One-way frequency distribution of atomic clock standards has been widely studied, and several architectures have emerged that employ the use of a return path signal to compensate for the effects of temperature and phase noise. These architectures have generally relied upon temperature-controlled delay lines to compensate for fiber thermal effects, and polarization scrambling techniques to minim...