蒙托克计划揭秘（中）

超越时空的研究上文讲述了普赖斯顿·尼古尔兹记忆中苏醒的虹计划的梗概。在本篇我们将揭开蒙托克计划的真相。首先,这个计划的诞生是以调查、研究有关“埃德里奇”号偶然发生的远距离传物现象为契机,并集中了三十多年来科学技术的精粹才完成下列众多惊人的技术:利用电子控制开发的精神控制系统,以时间扭曲现象的出现为契机开发的时间隧道,进一步探讨可能实现时间旅行的系统,按步骤进行的最终能“自由控制时间的技术”。下面我们将追随时代来回顾一下。20世纪40年代后期,虹计划再度浮出。有关当局在决定重新开始该计划的同时,召回冯·诺伊曼…     

生命是时空中的一条辫子

“劳驾，请问现在几点了？”我们大概都问过这样的问题。好像这世间真有时间这么一个东西似的。然而，你很可能从来没有这样问过一个陌生人：“劳驾，请问在哪里？”如果你迷了路，实在不知道自己在哪里，你很可能会这样问：“劳驾。请问我这是在哪里？”这就不是在问空间的一个特性，而是你自己的特性。询问时间也一样。你问的不是时间的特性，而是你在时间轴的某个位置。     

大量程捷联惯性组合信号同步性研究

针对某大量程、高动态武器用捷联惯性组合数据测量、交互传输及处理的时间轴同步性问题,进行形成机理分析研究。结合系统要求,采取相应手段进行处理。最终对处理效果进行实验验证,结果显示同步性问题得到较好解决,系统精度提高。     

Simultaneous ISAR imaging of group targets flying in formation

This paper proposes a novel inverse synthetic aperture radar(ISAR) imaging method based on second-order keystone transform(KT) and Sandglass transform for group targets flying in a formation with constant accelerated rectilinear motion in the same radar beam. First, range curvature and range walk of each sub-target among group targets are corrected by the second-order KT combined with the quadratic phase term compensation. After range alignment, the signals in each range frequency cell can be modelled as multiple chirp signals and then the Sandglass transform is utilized to cross-range imaging, which transforms the time–frequency distribution of the signals in each range frequency cell into beelines parallel to the slow time axis simultaneously. Finally, cross-range profiles of group targets in each range frequency cell are obtained via a projection of the perk of every scatterer in the two-dimensional accumulation plane onto the frequency axis. The advantage of the proposed method is that it can align range profiles of each sub-target simultaneously and image cross-range profiles directly without separating the returned signals, which simplifies the operation procedure. Simulation results are used to demonstrate the effectiveness of the proposed method.