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为了解决机器视觉测量中,由被测物体表面结构差异或反射率不同而引起的视觉质量问题,提出一种新型的基于投影仪-相机系统的自适应......

Characteristics of a single-feed dual-frequency bow-tie microstrip antenna are studied. By using the variation method, s......

The wind retrieval performance of HY-2 A scanning scatterometer operating at Ku-band in HH and VV polarizations has been......

随着超低功耗芯片技术的发展,无线传感器节点的功耗已进入微瓦(μW)级范围,使低功耗传感器利用周围环境中的射频无线能量为自身供......

在精密测量领域, He-Ne 激光器是制造激光干涉仪的首选光源，因波长作为测量的“尺子”，激光器的频率稳定性至关重要。介绍了双频激光......

This paper proposed a novel tunable dual frequency laser with large frequency difference,which used LD to pump the Nd∶Y......

文中基于低纬度、极地地区的IGS连续跟踪站实测数据对比分析了极地地区北斗伪距单点定位精度。经研究发现,北极地区与低纬度地区北......