Long-range surveillance and early warning of space targets are significant factors in security. Under remote observation conditions, the energy performance target is weak subject to environmental imaging process contamination. Most detection methods aimed at with a high signal-to-noise ratio (SNR) or local contrast, for dim-weak small poor; therefore, signal often enhanced by accumulation. Howe...

Existing research mainly fucus on organization and visualization of 3D building models in circumstances which are the main spatial objects, yet multi-scale representation of geometry and texture information still not taken into account, especially multi-scale transmission suitable for the network environment is a key point needed to be break. Thus, an organization method for multi-scale 3D mode...

a saddle point variational (spv ) method was applied to the dirac equation as an example of a fully relativistic equation with both negative and positive energy solutions. the effect of the negative energy states was mitigated by maximizing the energy with respect to a relevant parameter while at the same time minimizing it with respect to another parameter in the wave function. the cornell pot...