该【测绘工程专业英语 】是由【1557281760】上传分享,文档一共【14】页,该文档可以免费在线阅读,需要了解更多关于【测绘工程专业英语 】的内容,可以使用淘豆网的站内搜索功能,选择自己适合的文档,以下文字是截取该文章内的部分文字,如需要获得完整电子版,请下载此文档到您的设备,方便您编辑和打印。ezhoubaWeiweiLu0330506002*BackgroundThedatum-workandlinear-workofGezhoubawerepartsofthedamdistortionmonitoringsystembuiltupatearly80`,suchascockamamieobservationways,highstrengthwork,,(Liaojiabao)resultinseveredistortionofdatum--workandlinear-worksystem,:20〞Elevationmask:15°Mode:staticUsedsatellites:≥5PDOP≤46FlowoffieldoperationPreparetheinstruments,arrangethestaffsReconnaissanceDrawthedraftandthesurveyscheduleFieldsurveyDownloadthedataandcalculatethebaselinesEvaluatethequalityofthebaselinesolutionsNotcheckoutRecastthebaselinesEvaluatethequalityofthebaselinesolutionsEndStartNotcheckoutCheckoutCheckout7BaselinecalculationsUsethesoftware-WinprismIngeneral,whenthebaselinesolutions’RMS≤1cmandRatio(ofthereliability)≥95%,thebaselinesolutionsarereliableRecastthesebaselineswhichdon’tcheckoutRemovethesebaselineswhichstilldon’tcheckout8Fore-processthebaselinesolutionsUsethesoftware-CosaGPS2000(developedbyWuhanUniversity)Calculate?theclosureerrorofthesynchronousloops?theclosureerroroftheasynchronousloops?theclosureerroroftheiterativebaselinesolutionsRemovethesebaselinesolutionswhichdon’tcheckout9Usethesoftware-CosaGPS2000Thethree-dimensionunconstrainedadjustmentThetwo-dimensionsimultaneousadjustment10
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