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毫米波系统与微波系统相比具有体积小、重量轻、带宽宽、空间分辨力高等特点,而与红外/电光系统相比又具有红外/电光系统所没有的穿透云、雾、烟、尘的能力。因此毫米波系统能够弥补微波系统与红外/电光系统的许多缺欠,能够妥善解决微波系统与红外/电光系统难以解决的许多问题。这一点早已为人们所认识。另外还有一点为人们所清楚认识到的是,毫米波在大气中传播能量的衰减与频率有关,这一频率特性在
Compared with the infrared system, the millimeter-wave system has the characteristics of small size, light weight, wide bandwidth and high spatial resolution compared with the microwave system. Compared with the infrared / electro-optical system, the millimeter-wave system also has the advantages of penetrating cloud, fog, smoke and dust Ability. Therefore, the millimeter-wave system can make up for many shortcomings of the microwave system and the infrared / electro-optical system and can properly solve many problems that are difficult to be solved by the microwave system and the infrared / electro-optical system. This has long been known to people. In addition, it is well known that the attenuation of the propagation of millimeter waves in the atmosphere is related to frequency, which is characteristic of