THz Radar Cross Section(RCS)measurement setup based on THz Time Domain Spectroscopy(TDS)is built to provide large scaled targets test ability in recent years.As calibrations,the metal plates and dihedrons are used in ...THz Radar Cross Section(RCS)measurement setup based on THz Time Domain Spectroscopy(TDS)is built to provide large scaled targets test ability in recent years.As calibrations,the metal plates and dihedrons are used in our experiments.The measurements are performed in a monostatic terahertz time-domain setup.The author proposed time domain and frequency domain calibration methods for angular RCS of calibrations,comparing the measurements with the theory to verify the ability of the time domain measurement setup.展开更多
This paper presents the scheme,function and technical specifications of170-325GHz waveband radar cross sec-tion(RCS) measurement system.Some steps are taken to improve the performance of the system,including multileve...This paper presents the scheme,function and technical specifications of170-325GHz waveband radar cross sec-tion(RCS) measurement system.Some steps are taken to improve the performance of the system,including multilevel ampl-i fication and frequency multiplication,low-order harmonic mixing,using external signal generators and intermediary fre-quency(IF) receiver.Considerable dynamic range and other characteristics are obtained with these approaches.Finally,the concrete implementation and experiment of1mm RCS measurement system are described,and feasibility of the system stud-ied in this paper is verified.展开更多
基金The Science and Technology Commission of Shanghai Municipality under Grant(16ZR1435000)
文摘THz Radar Cross Section(RCS)measurement setup based on THz Time Domain Spectroscopy(TDS)is built to provide large scaled targets test ability in recent years.As calibrations,the metal plates and dihedrons are used in our experiments.The measurements are performed in a monostatic terahertz time-domain setup.The author proposed time domain and frequency domain calibration methods for angular RCS of calibrations,comparing the measurements with the theory to verify the ability of the time domain measurement setup.
文摘This paper presents the scheme,function and technical specifications of170-325GHz waveband radar cross sec-tion(RCS) measurement system.Some steps are taken to improve the performance of the system,including multilevel ampl-i fication and frequency multiplication,low-order harmonic mixing,using external signal generators and intermediary fre-quency(IF) receiver.Considerable dynamic range and other characteristics are obtained with these approaches.Finally,the concrete implementation and experiment of1mm RCS measurement system are described,and feasibility of the system stud-ied in this paper is verified.
