英语翻译．Energysourceorillumination(A)一thefirstrequirementforremotesensingistohaveanenergysourcewhichilluminatesorprovideselectromagneticenergytothetargetofinterest．Theprimarysourceofelectromagneticenergythat

Question

英语翻译
．Energy source or illumination(A)一the first requirement for remote sensing is to have an energy source which illuminates or provides electromagnetic energy to the target of interest．The primary source of electromagnetic energy that illuminates natural targets is the sun,although Earth itself can emit geothermal and man-made energy．
Electromagnetic radiation is a form of energy．The fundamental unit of electromagnetic radition is the photon．The photon,which has energy but no mass,moves at the speed of light．The wave theory of light has light traveling in wavelike patterns,with its energy characterized by its wavelength or frequency．The speed of light is generally considered to be 300,000km／s．Figure 2 shows the electromagnetic spectrum,with wavelengths ranging in size from the very small(cosmic,gamma,and x-rays)to the very large(radio and television)．In most remote sensing applications,radiation is described by its wavelengths,although those using microwave(Radar)sensing have traditionally used frequency instead to describe these mush longer wavelength signals．

Answer 1

能源或照明（一）一的第一需要,遥感是有能量的来源而发亮或提供电磁能量的目标interest.The主要来源的电磁能量,照亮自然目标是太阳,尽管地球本身可以发射地和人为的能源.
电磁辐射是一种形式的能量基本单位的电磁辐射是photon.The光子,它的能源,但没有质量,动作的速度光波理论轻了轻旅游wavelike模式,其能源其特点是其波长或频率光速通常被认为是三十〇点〇 〇万公里/ s.Figure 2显示了电磁频谱,与波长的大小非常小（宇宙,γ和X射线）的非常大的（电台和电视台） .在大多数遥感应用,辐射的波长所描述的,虽然这些利用微波（雷达）遥感已不是传统上使用的频率来描述这些玉米粥较长波长的信号.