Showing papers by "National University of Defense Technology published in 1988"
23 May 1988
TL;DR: In this article, the principle and method of passive location and tracking of a moving emitter by a single non-maneuvering observer using DOA and TOA (time of arrival) measurements are presented and described.
Abstract: Passive location and tracking (PLAT) of a moving emitter can be implemented by multi-sited observers or by single maneuvering observer using DOA (direction of arrival) measurements only. The principle and method of passive location and tracking of a moving emitter by a single non-maneuvering observer using DOA and TOA (time of arrival) measurements are presented and described. Computer simulation of PLAT of a moving emitter in two dimensional plane was implemented. It shows that convergent and accurate tracking data can be obtained. >
7 citations
TL;DR: In this paper, a general solution of differential equation for lateral displacement lunction of rectangular elastic thin plates in free vibration is established, which can be used to solve the vibration problem of rectangular plate with arbitrary boundaries.
Abstract: A general solution of differential equation for lateral displacement lunction of rectangular elastic thin plates in free vibration is established in this paper. It can be used to solve the vibration problem of rectangular plate with arbitrary boundaries. As an example, the frequency and its vibration mode of a rectangular plate with four edges free have been solved.
4 citations
TL;DR: In this article, the necessary and sufficient conditions for a digraph to be a posetable digraph were proved and proved in the presence of a directed path between u and v for any arc a = (u, v) of a given digraph.
TL;DR: The ductile microstructural fracture model of Seaman et al. as mentioned in this paper is incorporated into a two-dimensional Lagrangian hydrodynamic-elastic-plastic finite-difference code L2EP discussed elsewhere and ductile fracture phenomena under intense impulsive loading can be simulated in great detail.