Study On The Design Of The Simulated Human System And The UWB Bioradar System

Non-contact life detecting system based on radar uses electromagnetic wave as detecting media ,which makes use of radar to detect human body surface's movement caused by respiration and heartbeat, picks up life-parameters of human and then identifies life object(human).It can detect human object or pick up human life-parameters through certain range and nonmetal medium such as clothes, brick wall, ruins and so on. This technology can be applied in medicine, military affairs, rescue, public safety, antiterrorism, etc. It has important practical value.Focusing on non-contact life detecting technology based on radar, our laboratory has studied detecting performance of linear continuous wave(LCW)radar of different wave band, restraining techniques of the clutters and interferences, extraction means of life-parameters from radar echo signal and object identification algorithm. In our experiments, we usually use human as detecting object. However, because of the individual diversities and the gestural differences, the life-parameters and results detected are various, which makes quantification detection, evaluation of system's performance and detecting results impossible, and disbennifits our study. So we need a simulated human system as the detecting object of non-contact life detection based on radar. Besides, UWB bioradar's capabilities of anti-interference, distance distinguishing and object identifying are better than LCW radar, which is now the developing aspect and studying focus of non-contact life detecting technology based on radar internal and abroad. Nevertheless, this radar's systematic structure, echo signal and object identification means are different from LCW radar. So this thesis focuses on the following two aspects:1. Study and design quantified simulated human system in which life-parameter can be adjusted. The simulated human system provides a standard object for non-contact life detection and scaling signal for quantification debugging and examining.2. Study and design UWB bioradar system based on object identification algorithm by time-domain characteristic, and apply it in various practical detecting environments to evaluate its performance.Innovations in this thesis are listed below:1. We studied and designed STB908 simulated human system for the first time. The system can simulate human body surface's movements caused by respiration and heartbeat and provide a precise and auntified detecting object.2. We firstly designed bioradar system based on UWB techniques, which is able to scan and explore motionless object and track moving object. This system can be used in practice.