简介：Speckleinterferometryisanefficientmethodtoanalyzeavibration.Incetrainconditions,thistechniquehassomeoutsandingadvantage,andneednotstrictshock-proofcondition,comparedwiththeholographicmethodformeasuringvibration,Therefors,itissuitabletoanayyzeavibrationwithalogaramplitude.Real-timeinterferometryisarapidandsimplemethodformeasuringvibrationofabody,givesspecklepatterncontainingamplitudedistributionofbody-surface.Bymeansoftime-averagedmethod.thespecklepatternisrecordedinFouriertransformplane.orvibra-tionlinesareseendirectlywitheyes,soastoanalyzeefficientlyampitude.phase,andmod-elofavibration.Thispaperdeducestheintensitydistributionfunctionwithreal-timemethod,andgivesexpermentaldemonstrationofvibrationbody-thevibrationlineswithdifferentfrequencies.

简介：Thealgorithmofautonomousorbitdeterminationfortheprobearoundsmallbodyisstudied.Inthealgorithm,first,theobservedimagesofthebodyarecomparedwithitspre-computedmodelofthebodytoobtainthelocationofthelimbfeaturesofthebodyintheinertialcoordinate.Second,theinformationoftheimagesandfeaturesinutilizedtoobtainthepositionoftheprobeusingtheLevenberg-Marquardtalgorithm.ThepositionistheninputtoanextendedKalmanfilterwhichdeterminestherealtimeorbitoftheprobe.Finally,consideringtheeffectiveoftheirregularsmallbodyshapeperturbationandthesmallbodymodelparametererrorontheorbitdeterminationprecise,theprocedureofautonomousorbitdeterminationisvalidatedusingdigitalsimulation.

简介：ThisstudyconcernssecurityissuesoftheemergingWirelessBodySensorNetwork(WBSN)formedbybiomedicalsensorswornonorimplantedinthehumanbodyformobilehealthcareappli-cations.Anovelauthenticatedsymmetric-keyestablishmentschemeisproposedforWBSN,whichfullyexploitsthephysiologicalfeaturesobtainedbynetworkentitiesviathebodychannelavailableinWBSNbutnototherwirelessnetworks.Theself-definedIntrinsicSharedSecret(ISS)isusedtoreplacethepre-deploymentofsecretsamongnetworkentities,whichthuseliminatescentralizedservicesorau-thoritiesessentialinexistingprotocols,andresolvesthekeytransportprobleminthepuresymmet-ric-keycryptosystemforWBSNaswell.Thesecuritypropertiesoftheproposedschemearedemon-stratedintermsofitsattackcomplexityandthetypesofattacksitcanresist.Besides,theschemecanbeimplementedunderalight-weightwayinWBSNsystems.DuetotheimportanceoftheISSconcept,theanalysisonusingfalseacceptance/falserejectionmethodtoevaluatetheperformanceofISSforitsusageintheschemeisalsodemonstrated.

简介：Anewmethodformeasuring3-Drigidbodydisplacementsisproposed,inwhichtwoperpendicularbeamsareemittedontotwosensitiveplanesofPSDsleingperpendiculartoeachother.Themethodcanbeusedtomeasure1-Dor2-Ddisplacementswhenrequired.Moreover,theexperimentalresultsarepresented,whichdemonstratethatthenewmethodhashighaccuracy,fastprocessingspeed,highreliability,andeasilybeingrealized.

简介：Anewmethodofcalculatingtheradaicrosssection(RCS)forwing-bodyblendedtargetsispresentedandverified.Themethodutilizesacomputerprogramformodelingtargets’geometryintermsofsmallpieces.Thecalculationisbasedonphysicalopticsapproximation.Examplesaregiventoshowthevalidityofthemethod.

简介：ＤｏｕｂｌｅＢｅａｍｓｔｏＭｅａｓｕｒｅＴｈｒｅｅ－ｄｉｍｅｎｓｉｏｎａｌＲｉｇｉｄＢｏｄｙＤｉｓｐｌａｃｅｍｅｎｔｓ①ＺＨＯＵＪｉａｎ，ＣＨＥＮＷｅｎｙｉ，ＺＨＡＯＨｏｎｇＴＩＡＮＦｅｎｇ，ＴＡＮＹｕｓｈａｎ（ＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｆｏ...

简介：分泌物参数通过小移动手持金属杆从控告的人的身体在静电的分泌物(ESD)被测量并且计算。关联学习与费用电压以及途径速度在分泌物参数上被执行了。在费用电压800V，分泌物参数的差别由电极的快、慢的途径速度引起了被发现到达极端价值。为这种特殊情况探索原因，与一个短差距的ESD模型一起的分析被执行。