shadow region

shadow region

[′shad·ō ‚rē·jən]
(electromagnetism)
Region in which, under normal propagation conditions, the field strength from a given transmitter is reduced by some obstruction which renders effective radio reception of signals or radar detection of objects in this region improbable.
References in periodicals archive ?
m]) in the shadow region has communication range with radius [r.
This is because most deep-sky objects are much fainter than starlight, so they get recorded at the shadow region of the histogram.
in]: The mean value of image red component inside the shadow region.
The plaque boundary detection in IVUS image is very difficult because a region of the IVUS image backward the guide wire often becomes shadowed, and then it contains no texture information in the shadow region as shown in Fig 2.
The depicted shadow region is a right circular cylinder with the singularity on its axis.
They used a HSV color space and exploit the statistical assumptions that in a shadow region, the brightness and saturation properties are reduced while hue properties remain same.
Mostly, an object higher than its surroundings, such as a mountain, hill, radio tower, church steeple, tree, person, or boat mast located within or along the edge of the charge shadow region, is targeted.
Furthermore, there is no color information in the shadow region due to the fact that the regions contain predomithat the regions contain predominantly gray tones (low valence in Fig.
The coming general election stands to be fought in the midst of protests in the shadow region between civil disobedience and defiance of the law.
But since his days as a body-builder Arnold has shown a tendency to dominate and inflict humiliation that suggests a shadow region in his psyche that Reagan simply did not have.
By that definition, a sheet of perfect absorber scatters exactly the same amount of power it absorbs, as a forward scattered field that is the negative of the incident field is required to provide the shadow region behind the sheet.