脉冲多普勒雷达回波信号数据压缩处理方法

为降低脉冲多普勒雷达测量高速目标时数据处理的难度，在分析目标多普勒频率和回波带宽的基础上，提出对经快速傅里叶变换（FW）后的采集数据进行压缩处理的方法，并阐述了其基本原理。研究表明，利用汉明窗可有效荻取多普勒频率，并在频域上进行数据压缩，既可保留目标的全部信息，又能获得较高的压缩比。     

包覆铝粉破裂燃烧的实验观测

为强化燃烧，让复合推进剂中的铝粉表面覆一种高分子表面活性剂。燃烧过程中这种活性剂形成不可参透的壳层，可通过破裂燃烧的方式铝粉快速完全的燃烧。     

固体火箭发动机激光点火系统

概述了固体火箭发动机激光点火的机理、实用激光点火系统的组成和主要技术关键。重点讨论了部分主要技术的解决途径。     

星载主动光学遥感技术现状

激光雷达具有重要的军事应用价值和民用价值,主要应用于军事侦察、军事气象、航天器交会对接和地球科学研究方面。文章简述激光雷达的研究历史,从地球科学应用角度阐述激光雷达技术现状。     

激光陀螺抖动偏频研究

激光陀螺抖动偏频技术是克服闭锁的一个重要措施,它对激光陀螺的精度影响极大。本文对抖动编频技术中的主要问题进行了研究。对谐振频率的确定、如何获得大的抖动振幅、振幅稳定与测量等问题进行了大量的实验研究,取得有重要使用价值的结果。     

激光标线仪校准方法研究CSCD

激光标线仪可以输出相互垂直的水平激光线和铅垂激光线,被广泛应用于建筑工程和装修装饰施工中,然而仪器的误差会直接影响工程质量。通过对输出激光线水平度、倾斜度和直线度等多项误差来源进行理论分析,研究并设计了针对各项误差的校准方法。     

激光干涉仪测量刚性转子动不平衡量技术浅析

介绍了采用激光干涉仪测量刚性转子运转时支撑上振动信号的原理,并简要分析了刚性转子动不平衡量的提取和解算技术.     

LD端泵Nd：YVO4固体激光器双折射现象研究

通过对LD端泵Nd：YVO4固体激光器输出特性的研究，并运用传播圆和变换圆理论的分析，得出了晶体双折射是影响激光器输出特性重要因素，并与实验相吻合。     

一种激光长刻机的工作原理

介绍了一种静态激光长刻机的工作原理,并介绍了该光刻方法的关键技术和工艺.     

L׳ADROIT – A spaceborne ultraviolet laser system for space debris clearing

Small (1–10 cm) debris in low Earth orbit (LEO) are extremely dangerous, because they spread the breakup cascade. Pulsed laser active debris removal using laser ablation jets on target is the most cost-effective way to re-enter the small debris. No other solutions address the whole problem of large (~100 cm, 1 t) as well as small debris. Physical removal of small debris (by nets, tethers and so on) is uneconomical because of the energy cost of matching orbits. In this paper, we present a completely new proposal relative to our earlier work. This new approach uses rapid, head-on interaction in 10–40 s rather than 4 minutes, using 20–40 kW bursts of 100 ps, 355 nm UV pulses from a 1.5 m diameter aperture on a space-based station in LEO. The station employs “heat-capacity” laser mode with low duty cycle to create an adaptable, robust, dual-mode system which can lower or raise large derelict objects into less dangerous orbits, as well as clear out the small debris in a 400-km thick LEO band. Time-average laser optical power is less than 15 kW. The combination of short pulses and UV wavelength gives lower required fluence on target as well as higher momentum coupling coefficient. An orbiting system can have short range because of high interaction rate deriving from its velocity through the debris field. This leads to much smaller mirrors and lower average power than the ground-based systems we have considered previously. Our system also permits strong defense of specific assets. Analysis gives an estimated cost less than $1 k each to re-enter most small debris in a few months, and about 280 k$ each to raise or lower 1-ton objects by 40 km. We believe it can do this for 2000 such large objects in about four years. Laser ablation is one of the few interactions in nature that propel a distant object without any significant reaction on the source.