We introduced particularly a series of methods for improving reliability , disturbance resistance , scanning scope and location precision , such as : using modulate laser , designing bandpass filter , zooming out signals and using a special circuit to get rid of disturbances . after that , the effective signals enter into the spring - circuit and touch off it , then the data register lock the codes , so the codes are read into single chip and are sent to the computer for the location . finally , many experiments about disturbance resistance , scanning scope and location precision have been done 为了提高导航定位系统的可靠性、抗干扰性、扫描范围及定位精度,使其具有良好的稳定性,而采取了一系列技术措施,包括:采用调制激光信号;设计带通滤波器和信号的整形处理电路;采用门限技术剔除干扰;并采用单片机系统对采集到的各类信号进行综合处理与管理;建立了基于合作路标的位置计算方法和数学模型,实时通过串行通讯送到上位机,以便上位机对数据进行处理,从而进行定位计算。
After that , according to thermal conduction theories of anisotropic materials that were irradiated with continuously modulated laser , a photothermal measuring method about the thermal conductivity tensor and the orientation of the principal axis of the conductivity of arbitrarily opaquely anisotropic materials in the descartes coordinate axes was given by virtue of the theories of so ( 3 ) group rotation 随后又以在连续调制光辐照下的各向异性介质的热传导理论为基础,通过so ( 3 )群转动理论,导出确定任意不透明各向异性介质在笛卡儿坐标下的热导张量和热导主轴方向的测量方法。