城市勘测
城市勘測
성시감측
URBAN GEOTECHNICAL INVESTIGATION & SURVEYING
2014年
6期
154-156
,共3页
吴伟%李浩%孙传胜%张国发
吳偉%李浩%孫傳勝%張國髮
오위%리호%손전성%장국발
监测基准测边网%误差椭圆%灵敏度%可靠性因子
鑑測基準測邊網%誤差橢圓%靈敏度%可靠性因子
감측기준측변망%오차타원%령민도%가고성인자
trilateration monitoring datum network%error ellipse%sensitivity%reliability factor
对某焦化厂监测基准网采用测边网代替边角网进行了探索,利用多期观测数据,从精度、可靠性、灵敏度及误差椭圆等方面对监测基准测边网代替边角网进行了对比分析,结果表明:在设计选点时考虑图形结构,尽量增加对角线测边,将网组成以中点多边形、四边形为主的重叠网,避开大气垂直折光角起伏较大的时段观测,保证气象条件改正的精确性及观测时间的选择,认为测边网可以代替同等精度的边角网。
對某焦化廠鑑測基準網採用測邊網代替邊角網進行瞭探索,利用多期觀測數據,從精度、可靠性、靈敏度及誤差橢圓等方麵對鑑測基準測邊網代替邊角網進行瞭對比分析,結果錶明:在設計選點時攷慮圖形結構,儘量增加對角線測邊,將網組成以中點多邊形、四邊形為主的重疊網,避開大氣垂直摺光角起伏較大的時段觀測,保證氣象條件改正的精確性及觀測時間的選擇,認為測邊網可以代替同等精度的邊角網。
대모초화엄감측기준망채용측변망대체변각망진행료탐색,이용다기관측수거,종정도、가고성、령민도급오차타원등방면대감측기준측변망대체변각망진행료대비분석,결과표명:재설계선점시고필도형결구,진량증가대각선측변,장망조성이중점다변형、사변형위주적중첩망,피개대기수직절광각기복교대적시단관측,보증기상조건개정적정학성급관측시간적선택,인위측변망가이대체동등정도적변각망。
This paper explored that replacing triangulateration with trilateration based on a coking plant monitoring datum network ,made use of multi-phase observation data ,compared analysis in some ways such as accuracy、reliability、sensitivity、error ellipse etc .The results showed that triangulateration could be replaced by trilateration monitoring datum network of the same accuracy .However ,it must pay attention to the graph structure ,add to the diagonal measurement as much as possible ,compose the overlay network that the midpoint polygon and quadrilateral accounted for the major part , observe far from atmospheric vertical refraction angel undulating period ,pay attention to the accuracy of weather condi-tions corrected and the time of observation selected .