Combined with the GPS measurement of wire _1221 -

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Combined with the GPS measurement of lead

andlinearobservedvaluesoftheunclosedtraversel56 Guangzhou University ( Natural Science) Volume 2 Clearly, Figure 2 only one GPS branched side conductors for the redundant observation , according to ( 2) specifically lists the conditions of equation y + Σcos + _0.1 where WDfcosa-L1- On behalf of the relevant data into the equation coefficient calculation conditions , have a 1-945val一0-076v # 2-1-524va3 +0-003 vo,一0-829v # 5 +0-820 voI +0-847 Vo2 +0-888 vo3 +0-885 vo4 +0-961 Vo5 +0-970 vo6 +167 · 2 = 0 - check = so = l, 1 = other . Taking into account approximately the same wire on all sides , taking D = 0.7km, then m begging = l02 + (5 × 0.7) = l0.5922, 1 = () _4.5mm ~ S-1 Too . = +11 · 4, +0-4, +8 · 9,0-0, +4-9, VDI = a 21-6, D2 A 22-3, D] a 23-4 , = a 23 ~ 4VD = A 25-4 , a 25.6 , which angle corrections to S as a unit, side corrections to lnln units. Wire angle,[link widoczny dla zalogowanych], flat edge point coordinate calculated the difference and lead a little . 4 Conclusion Measurement of the wire measurement and GPs to take the fullest use of their advantages, depending on conditions difficult to pass Traverse region become more flexible and convenient , and to traverse a longer extension is possible. Appropriate place in the wire by high-precision GPS measurement side , improved graphics wire structure and improve the lead point precision ; the other hand , it can reduce the angle , the amount of edge requirements , reducing the labor intensity of field work . GPs side addition to the length of the baseline information, also has location information , this article is limited to the length of side information using GPS to improve the accuracy of wire points , how to use GPS information to improve the edge of Traverse all space , will combine the two effectively , Needs further study.

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