液氮云雾在舞台艺术中的应用

The articleintroduces the method andprocess of liquid nitrogenmist spraying application,its features,advantages anddisadvantages.

舞台背景灯光纵深感的体现初探

In order to ensure the safety of lamp, the temperature in interior structure of lamp must be within the safe range. This paper states some factors that should be considered in design of temperature control system of lamps. It set out two examples to show the methods of heat emitting in lamp design.

基于阵列信号处理的北斗抗干扰终端设计

为提高北斗RDSS用户终端的抗干扰能力,设计并实现了一款基于阵列信号处理的北斗抗干扰终端。终端接收部分采用数字移相波束形成,发射部分采用射频移相波束形成技术,采用微带天线实现天线阵元。终端主机采用通用功能化硬件DSP与专用功能化硬件FPGA相结合的设计方案,完成抗干扰接收和低暴露发射的综合处理。通过对工程样机的测试,与普通北斗用户终端相比,工程样机窄带干扰容限提高36 dB,宽带干扰容限提高33 dB。