一種更嚴(yán)密的雙介質(zhì)立體攝影測量折射改正算法
[Abstract]:A more rigorous correction algorithm of square coordinate refraction in stereo photogrammetry with two media is proposed. The algorithm uses the midpoint of the common vertical line of the same name line ray in the air of the target as the theoretical position of the intersection point of photogrammetry. The uncertainty of the point position relationship caused by the non-existence of the intersection point of photogrammetry is solved, and the formula of coordinate refraction correction from the intersection point of photogrammetry to the real point can be deduced strictly. This paper analyzes the adverse effect of the disjoint of the line ray of the same name in the air on the refraction correction of the object square geodetic coordinate, and studies the mutual position relationship between the intersection point of photogrammetry and the underwater real object point. The calculation formulas of depth and geodetic coordinates of underwater target points (i.e. refraction correction formula) are derived. The correctness and accuracy of the algorithm are verified by the WorldView-2 stereoscopic images of shallow sea seabed topographic measurements. The results show that the algorithm is applicable and can improve the accuracy of underwater target elevation measurement, regardless of the intersection of the line extension line of the same name line in the air of underwater target.
【作者單位】: 上海海洋大學(xué)海洋科學(xué)學(xué)院;信息工程大學(xué)五院;
【基金】:上海市科學(xué)技術(shù)委員會(huì)科研計(jì)劃(14590502200) 航空遙感技術(shù)國家測繪地理信息局重點(diǎn)實(shí)驗(yàn)室基金(2016B05)~~
【分類號(hào)】:P23
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