大二下大禮包平差

第七章間接平差間接平差原理誤差方程精度評定GPS網(wǎng)間接平差導(dǎo)線網(wǎng)間接平差七參數(shù)坐標(biāo)轉(zhuǎn)換平差一、間接平差原理——函數(shù)模型式中：觀測方程：h5h4ADCBh1h6h2h3一、間接平差原理——基礎(chǔ)方程及其解按函數(shù)極值的求法，極值函數(shù)：法方程式一、間接平差原理——計(jì)算步驟檢驗(yàn)，評定精度選擇

t個獨(dú)立的未知參數(shù)；將每個觀測值表示成未知參數(shù)的函數(shù)，形成誤差方程；形成法方稱并解算；計(jì)算

V值;一、間接平差原理——算例HA=12.386h1=2.138S1=2.8h2=1.744S2=2.0h3=1.301S3=2.4h4=0.461S4=1.1h5=0.841S5=2.1h6=0.381S6=1.6h5h4ADCBh1h6h2h3一、間接平差原理——算例h5h4ADCBh1h6h2h3一、間接平差原理——算例HA=12.386h1=2.138S1=2.8h2=1.744S2=2.0h3=1.301S3=2.4h4=0.461S4=1.1h5=0.841S5=2.1h6=0.381S6=1.6h5h4ADCBh1h6h2h3一、間接平差原理——算例HA=12.386h1=2.138S1=2.8h2=1.744S2=2.0h3=1.301S3=2.4h4=0.461S4=1.1h5=0.841S5=2.1h6=0.381S6=1.6h5h4ADCBh1h6h2h3一、間接平差原理——算例h5h4ADCBh1h6h2h3h2h1P1P2P3h3h1=2.138S1=1.0h2=1.744S2=1.0h3=3.894S3=0.5試按間接平差法平差一、間接平差原理——算例二、誤差方程觀測值：

n必要觀測：t多于觀測：r

n=7t=3r=4

h6h4h2h5h3P1BAP2P3h7h11、水準(zhǔn)網(wǎng)高差觀測值二、誤差方程1、水準(zhǔn)網(wǎng)高差觀測值n=20t=9r=11ABCDP1P2P3P4P5P6P7P8P9h1h2h3h4h5h6h7h8h9h10h11h12h13h14h15h16h17h18h19h20二、誤差方程2、GPS網(wǎng)基線向量n=33t=15r=18ABCDEF1234567891011二、誤差方程3、三角網(wǎng)角度觀測值421875936ABCD二、誤差方程421875936ABCD3、三角網(wǎng)角度觀測值二、誤差方程3、三網(wǎng)331214433004435130324724595058441622430508592620L1：L2：L3：L4：L5：L6：L7：L8：ABCD

XYA12.55321.386B12.46226.658計(jì)算C、D近似坐標(biāo)C16.66522.433D16.56225.759計(jì)算各邊近似方位角、邊長AB9059205.2728AC4729165.9329AD1417024.2429BC34738144.1975BD31450505.9594CD27145583.3281計(jì)算各邊誤差方程系數(shù)3、三角網(wǎng)角度觀測值二、誤差方程331214433004435130324724595058441622430508592620L1：L2：L3：L4：L5：L6：L7：L8：ABCD

XYA12.55321.386B12.46226.658計(jì)算各邊誤差方程系數(shù)

ΔX0ΔY0S0abAB-0.0915.2725.272839113.0675.1AC4.0094.3735.932925627.5-23493.3AD4.1121.0474.242911994.5-47111.6BC4.100-0.8994.1975-10521.0-48000.9BD4.203-4.2255.9594-24539.2-24408.7CD0.103-3.3263.3