Optimization model of networks " roughness is established . in this model , objective function is the average scedasticity of relative error for water level and discharge . with the recorded water level and tidal data , the value of roughness is optimized 建立了以流量和水位相對均方差作為目標函數(shù)的河網(wǎng)糙率優(yōu)化模型,并利用實測的河道水位及潮流資料,對河道的糙率取值進行了優(yōu)化,所建立的糙率優(yōu)化模型更加合理,計算的效率及精度大大提高了。
Then , harmonic analysis is done with the newest baytap - g tidal data analyzing software developed by ishiguro and professor tamura , who are working in japan and the eterna34 tidal data analyzing software developed by wenzel , who had worked in german . as a result , the recently observed tidal gravity parameters of jiufeng station are obtained . finally , the ocean loading correction of the observing tidal gravimetric parameters , the temporal synthesized tide , correction of the station air pressure and the polar motion on the gravity residual , the analysis of the final residual , and so on , are investigated Vauterin研制的tsoft潮汐數(shù)據(jù)預處理軟件,實施了觀測數(shù)據(jù)的預處理,為超導重力儀觀測數(shù)據(jù)的國際資料交換和數(shù)據(jù)分析準備了修正后數(shù)據(jù);然后利用由日本ishiguro與tamura研制的最新的baytap - g和由德國的wenzel研制的eterna34潮汐分析軟件,對預處理后的重力潮汐觀測數(shù)據(jù)進行調(diào)和分析,獲得了九峰臺最近的觀測重力潮汐參數(shù);最后討論了觀測潮汐參數(shù)的海潮改正、隨時間變化的重力合成潮的構制、大氣效應改正、極移重力改正以及最終重力殘差的分析。
At the same time , we introduce the extended range of akp ( ob ) value ( er ( akp ) ) as the relatively objective criterion of checking observational tidal data to get rid of those unreasonable data before resolving the fcn parameters , and it is very important for us to improve the quality of resolving fcn parameters objectively and effectively 這利于我們清晰地分析觀測資料與解算結(jié)果之間的相應關系。同時,我們提出er ( akp )作為一種衡量觀測資料優(yōu)劣的相對客觀的標準,使我們在解算前就舍棄一些不太合理的資料。這對于我們客觀有效地提高解算質(zhì)量是很有價值的。