Isopistonic angle for multi-aperture interferometers from isoplanatic angle
نویسندگان
چکیده
منابع مشابه
Aperture angle analysis for ellipsoids
Let Ω ⊆ Rn be a compact convex set and x be a point in the exterior of Ω. The aperture angle of x relative to Ω is defined as the maximal angle of the smallest closed convex cone that contains Ω − x. This note provides an explicit formula, based on eigenvalues of symmetric matrices, for the aperture angle of a point relative to an ellipsoid.
متن کاملAperture angle optimization problems
Let P and Q be two disjoint convex polygons in the plane with m and n vertices, respectively. Given a point x in P, the aperture angle of x with respect to Q is deened as the angle subtended by the cone that contains Q, has apex at x, and has its two rays emanating from x tangent to Q. We present algorithms with complexities O(n logm) and O(n+m) for computing the maximum aperture angle with res...
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Let Ω ⊆ Rn be a compact convex set and x be a point in the exterior of Ω. The aperture angle of x relative to Ω is defined as the maximal angle of the smallest closed convex cone that contains Ω − x. This note provides an explicit formula, based on eigenvalues of symmetric matrices, for the aperture angle of a point relative to an ellipsoid.
متن کاملAperture-angle optimization problems in 3 dimensions
Let a; b] be a line segment with end points a, b and a point at which a viewer is located, all in R 3. The aperture angle of a; b] from point , denoted by (), is the interior angle at of the triangle (a; b;). Given a convex polyhedron P not intersecting a given segment a; b] we consider the problem of computing max () and min (), the maximum and minimum values of () as varies over all points in...
متن کاملRelationship between fracture dip angle, aperture and fluid flow in the fractured rock masses
Most of the Earth's crust contains fluids, and fractures are common throughout the upper part. They exist at a wide range of scales from micro-fractures within grains to major faults and shear zones that traverse the crust. In this paper, the stress-dependent permeability in fractured rock masses have been investigated considering the effects of nonlinear normal deformation and shear dilation o...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20078173