BOTDR光纤应变测试仪计量特性评价

37BOTDR(,232001):BOTDR,,:;;;;:TH741:A:1002-6061(2008)01-0037-03EvaluationofMeasuringCharacteristicofBOTDROpticalFiberStrainTesterZHANGXue2mei(TheNo18ResearchInstitute,ChinaElectronicsTechnologyGroupCorporation,Huainan232001,China)Abstract:ThetestingprincipleoftheBOTDRopticalfiberstraintesterisintroduced1Therepeatability,stabilityanduncertaintyofthetesteraremeasuredandevaluated,andthevalueofthemeasuringcharacteristicstatedinthetechnicalinstructionisprovedwiththemeasuringresults1Keywords:opticalfiberstrain;tester;repeatability;stability;uncertainty0,,,,,=L/L,L,L%,1=010001%1km1%,1101km,,OPGW,,,,,,:2007-07-09;:2007-07-26:(1962-),,,(),AQ8603,BOTDR,,1BOTDRBOTDROTDR()(),B=2nvA/(1):n;vA(6km/s);11GHz(1550nm),B(x)=B(0)(1+Cx)(2):B(0);C(493MHz/%)(1MHz/);xT382008281(2),1BOTDR,,,,14,,,,1BOTDRBOTDR,,,,,,2G1652FC,200m,100m,1000m,,(BOTDR):,(203),75%,20min,:1550nm,5km,100ns,11468,40,101650GHz,111040GHz,10MHz,5s3:;;;;2,10010034%,010033%,010051%,010038%,010059%,010062%,010045%,010063%,010047%,010069%s(x),s(x)=1n-1ni=1(xi-x)2=010013%4,39,24h01004%,01004%,010069%,01003%,010028%,010028%,010038%,010028%,01004%,01004%(Bessel)s(x),s(x)=010012%5:,,;,,B;,511A,,sA=s(x)=010013%,uA=sA/10=010004%A=10-1=9512B,01003%,,k=2,uB=U/k=01003%/2=010015%,B513,,uc=u2A+u2B=010016%514eff=u4c/(u4A/A+u4B/B)=23071651595%,eff=230716,t,eff,k=t(eff)=2,U=uck=010016%2=010032%6,010016%,U=010032%;010013%,0102%;010012%:01005%,()010032%01005%,2%,010032%,,[1]1[M]1:,20021[2]1[M]1:,20021[3]1[Z]1[4]GJB4489-2002,[S]1[5]GJB1428A-99,[S]1[6],1[J]1,2005,(2):98-1011(21),,,;,,;,,,[1]1[M]1:,20001[2],,1[J]1,2006(6):1-41[3],1[J]1,2006,27(3):479-4811