Two approaches were presented to show the improvement of ground resolution by cross-track interferometric SAR.

Bundle conductor minimum ground clearance of 1 000 kV AC UHV transmission lines;

Research about ground clearance and cross and span of UHV DC transmission lines is an important topic of UHV DC transmission technique.

This article presents calculation methods of electric field intensity near the line with four circuits on one tower of 500 kV and 500 kV/220 kV mixed voltage and compares the result that of the traditional 500 kV single circuit and double circuits on one tower,and tries to find out the best lay form of wires between phases and the least distance to the ground,and analyzes th.

Method of fundamental solutions based on geodesic distance for inhomogeneous heat conduction equations in anisotropic medium;

Method of fundamental solutions based on geodesic distance for anisotropic heat conduction problems;

Using locally estimated geodesic distances to improve Hessian local linear embedding;

Operating criterion and test method of ground distance relay;

This paper analyzes the different influences to ground and inter-phase distance protection and reaches to the conclusion that the ground distance overreaching lies on the amplitude error while the inter-phase one dues to phase-angle error.