G96762662467626730662467626624 PRN OF OBS G147846783978467846783978467839 PRN /OF OBS G307846784678467846784678467846 PRN /OF OBS END OF HEADER 12111002552.0000000010G18G9G23G15G5G21G17G30G14G26 107414891.60983699916.333420440377.804820440377.2684620440374.60746 -194.033 -151.191 109283277.154 85155764.1724 20795918.316820795917.9134620795916.92646 -2846.60 -2218.127 111223838.776 86667895.977421165192.911821165192.4644621165193.48846 -1939.360 -1511.182 114719324.450 89391657.9384 21830366.179721830365.2944521830368.50644 2415.563 115907068.692 90317211.633422056385.439722056384.423422056387.13244 1137.953 886.720 118488774.360 92328896.964422547659.488622547659.0474322547659.78943 2106.621 1641.523 1)解释文件头中各行的格式及含义： 2)解释数据记录中第一历元“历元/卫星”记录行的各数据的格式及含义： 3)对于第18号卫星，记录的P1精密测码伪距为“20440377.26846”，各数字含义 是什么？ 4)计算该历元中15号卫星的宽巷(Wide Lane)观测值p.、无电离层折射延迟观测 值LC、模糊度差值(N,-N,入、电离层残差组合L, 12、测站基本信息同第11题，以下给出了18号卫星从0：26：00开始的连续11个 历元的观测值， 107416408.458 83701098.2724 20440666.475820440666.1804620440663.30846 -186.229 -145.111 107416593.589 83701242.5274 20440701.682820440701.4224620440698.53646 -185.131 -144.255 107416777.420 83701385.7684 20440736.633820440736.4104620440733.49046 -183.831 -143.241 107416960.211 83701528.2004 20440771.391820440771.1944620440768.27746 -182.791 -142.432 10741714L.682 83701669.6034 20440805.943820440805.7644620440802.80646 181.470 141.403 107417321.694 83701809.8694 20440840.131820440840.0264620440837.03946 -180.012 -140.266 107417500.862 83701949.4784 20440874.257820440874.1324620440871.12846 -179.168 -139.609G 9 6762 6624 6762 6730 6624 6762 6624 PRN / # OF OBS G14 7846 7839 7846 7846 7839 7846 7839 PRN / # OF OBS … G30 7846 7846 7846 7846 7846 7846 7846 PRN / # OF OBS END OF HEADER 12 11 10 0 25 52.0000000 0 10G18G 9G23G15G 5G21G17G30G14G26 107414891.609 83699916.3334 20440377.804 8 20440377.26846 20440374.60746 -194.033 -151.191 109283277.154 85155764.1724 20795918.316 8 20795917.91346 20795916.92646 -2846.605 -2218.127 111223838.776 86667895.9774 21165192.911 8 21165192.46446 21165193.48846 -1939.360 -1511.182 114719324.450 89391657.9384 21830366.179 7 21830365.29445 21830368.50644 -3099.989 -2415.563 115907068.692 90317211.6334 22056385.439 7 22056384.42344 22056387.13244 1137.953 886.720 118488774.360 92328896.9644 22547659.488 6 22547659.04743 22547659.78943 2106.621 1641.523 …… 1）解释文件头中各行的格式及含义； 2）解释数据记录中第一历元“历元/卫星”记录行的各数据的格式及含义； 3）对于第18号卫星，记录的P1精密测码伪距为“20440377.26846”，各数字含义 是什么？ 4）计算该历元中15号卫星的宽巷(Wide Lane)观测值  w 、无电离层折射延迟观测 值LC、模糊度差值（ N2 − N1 ）、电离层残差组合 LI 。 12、测站基本信息同第 11 题，以下给出了 18 号卫星从 0:26:00 开始的连续 11 个 历元的观测值， 107416408.458 83701098.2724 20440666.475 8 20440666.18046 20440663.30846 -186.229 -145.111 107416593.589 83701242.5274 20440701.682 8 20440701.42246 20440698.53646 -185.131 -144.255 107416777.420 83701385.7684 20440736.633 8 20440736.41046 20440733.49046 -183.831 -143.241 107416960.211 83701528.2004 20440771.391 8 20440771.19446 20440768.27746 -182.791 -142.432 107417141.682 83701669.6034 20440805.943 8 20440805.76446 20440802.80646 -181.470 -141.403 107417321.694 83701809.8694 20440840.131 8 20440840.02646 20440837.03946 -180.012 -140.266 107417500.862 83701949.4784 20440874.257 8 20440874.13246 20440871.12846 -179.168 -139.609