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Small space debris detector

Author: YuanQingZhi
Tutor: SunYueQiang
School: Graduate School, Chinese Academy of Sciences
Course: Aircraft design
Keywords: Space debris Cosmic dust PVDF Small space debris detector
CLC: V447
Type: Master's thesis
Year: 2005
Downloads: 230
Quote: 1
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Abstract


With the expansion of human activities to the outer space , exploration of outer space , the use of outer space and to protect the safety of human activity in outer space is an important part of the current space activities . Human spaceflight activities increasing the amount of space debris , space debris pose a serious threat to normal flight of the spacecraft in orbit . Space debris detection and research work has become an important part of the field of space exploration , has become an important part of the spacecraft in orbit security . In order to protect the spacecraft safe operation in orbit , space debris model of imminent , but the accuracy and reliability of the model constrained by the probe data , this proposed development of small space debris detector . The instrument is the first time the development of space debris in orbit detection equipment , has a high application value and academic value . This paper first introduces the distribution of the space debris in low Earth orbit , and spacecraft hazards ; a foreign modeling work , as well as the scope of work of these models , the accuracy of the . There are three foreign space debris detector : the main types of a semiconductor detector , the second is the sputtering plasma detector , PVDF piezoelectric detectors . These three detection scheme , and compared . Finally , in -depth analysis of the distribution of near-Earth orbit space debris , according to the probe needs a tiny space debris detector program . The detector design phase separation method using the sensor and the electronics box , the sensor mounted directly on the surface of the spacecraft , and the electronics box located inside the spacecraft between rely on the shielded cable is connected . This design approach can be effective to increase the detection area , and reduce the quality of the detector . The detector sensor uses a new type of piezoelectric material polyvinylidene fluoride ethylene (PVDF), using the time-of-flight ( TOF ) method accurate determination of space debris flying speed , as well as the quality of the fast pulse analysis system debris .

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Space instrument,spacecraft devices,spacecraft guidance and control > Scientific exploration equipment and instruments
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