초록 ▼

The computation system of the present invention comprises an improved method of moment estimation for devices which measure spectra as a function of range or time. The preferred embodiment of this system is illustrated as part of an automated meteorological monitoring system for the accurate real ti

The computation system of the present invention comprises an improved method of moment estimation for devices which measure spectra as a function of range or time. The preferred embodiment of this system is illustrated as part of an automated meteorological monitoring system for the accurate real time detection of meteorological phenomena, such as winds, wind shear and turbulence. This automated meteorological monitoring system uses a standard weather radar transmitter to scan a predetermined volume of space with a stream of radar pulses to determine the characteristics of meteorological phenomena that are extant in the predetermined volume. The computation system of the present invention utilizes novel signal processing algorithms in the improved method of moment estimation to excise the valid data from the returns echoes, which are corrupted by the presence of contaminating signals. Separating the valid data from the noise in this manner improves the responsiveness and accuracy of the system in which this method is implemented.

대표청구항 ▼

[ We claim:] [1.]1. In a Doppler system that transmits a train of pulses of radio frequency energy into a predefined region of multidimensional space and receives return echo signals from scatters extant in said predefined region of space in response thereto, which return echo signals include at lea

[ We claim:] [1.]1. In a Doppler system that transmits a train of pulses of radio frequency energy into a predefined region of multidimensional space and receives return echo signals from scatters extant in said predefined region of space in response thereto, which return echo signals include at least one feature of interest and contaminating components, apparatus for mitigating the effects of said contaminating components comprising:means for processing said spectral data to determine at least one mathematical quantity of said spectral data, comprising;means for mapping said return echo signals into Doppler velocity-range coordinated space;means for segmenting said Doppler velocity-range coordinate space into a plurality of sub-regions;means for computing at least one mathematical quantity based upon said received return echo signals for each of said plurality of sub-regions;means for fuzzy logic analyzing said determined at least one mathematical quantity to produce local composite data for a plurality of sub-regions;means for image processing said local composite data to extract said at least one feature of interest from said local composite data; andmeans for extracting desired measurement data from said at least one feature of interest.