Method for processing non-meteorological noise in radar echoes

A radar echo and meteorological clutter technology, which is used in the reflection/re-radiation of radio waves, climate sustainability, radio wave measurement systems, etc. It can solve the problems of visual product impact and inability to effectively remove clutter.
CN101706571AInactive Publication Date: 2010-05-12宁波市气象服务中心
0 Cites 31 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
宁波市气象服务中心
Publication Date
2010-05-12
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a method for non-meteorological noise in radar echoes, which comprises the steps of: identifying noise areas existing on an 1.5 DEG elevation plane and an 0.5 DEG elevation plane by simply classifying the radar echoes, then analyzing reflectivity factor values of the echoes and then orderly referring radial velocity values and spectrum width values; performing a best noise rejection strategy on different noises after the noise areas are correctly identified; directly adopting a rejection strategy for noises under the conditions of clear sky and no precipitation echoes at peripheries; and adopting an approximate value filling mechanism for noises which are mixed in the precipitation echoes or are adjacent to the precipitation echoes so as to achieve better rejection effect.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to a method for processing radar echoes, in particular to a method for processing non-meteorological clutter in radar echoes. Background technique

[0002] Doppler weather radar uses the backscattering of electromagnetic waves by cloud and rain targets to find meteorological targets, and determine the spatial position and strength distribution of meteorological targets, so as to understand the generation and disappearance, evolution, and moving speed of precipitation. But Doppler weather radar can also detect non-meteorological targets. When non-meteorological targets are processed into the radar base data, they will cause clutter pollution. Non-meteorological targets are non-meteorological clutter. Non-meteorological clutter includes ground clutter and isolated points and speckle noise clutter. Waves include common ground clutter NP and transient clutter AP caused by the abnormal propagation of radar beams when the radar beam is prop...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More