【摘要】：哨兵衛(wèi)星采用TOPS模式成像,為確保影像干涉相位偏差小于3°,方位向配準(zhǔn)精確度需達(dá)到0.001個(gè)像素。本文論證了哨兵衛(wèi)星精密軌道條件下進(jìn)行幾何配準(zhǔn)即可達(dá)到較高的配準(zhǔn)精度,滿足增強(qiáng)譜分集進(jìn)行方位向殘余偏移量估計(jì)的前提條件,并基于DORIS軟件實(shí)現(xiàn)哨兵衛(wèi)星TOPS模式影像的幾何配準(zhǔn)和增強(qiáng)譜分集優(yōu)化配準(zhǔn)處理。地表方位向形變等信號(hào)可導(dǎo)致Burst干涉圖之間發(fā)生相位跳變,并對(duì)增強(qiáng)譜分集估計(jì)幾何配準(zhǔn)殘余偏移量時(shí)產(chǎn)生干擾,本文開展了相關(guān)的理論分析和數(shù)據(jù)處理試驗(yàn),提出粗差探測(cè)方法消除相位跳變對(duì)增強(qiáng)譜分集配準(zhǔn)的干擾。
[Abstract]:The Sentinel satellite is imaged in TOPS mode. In order to ensure the interference phase deviation is less than 3 擄, the azimuth registration accuracy needs to reach 0.001 pixels. In this paper, it is demonstrated that the geometric registration of Sentinel satellites under precise orbit conditions can achieve a higher registration accuracy, which meets the prerequisite of estimating the azimuth residual migration of enhanced spectral diversity. Based on DORIS software, geometric registration and enhanced spectral diversity optimization of Sentinel satellite TOPS pattern images are realized. Surface azimuth deformation and other signals can cause phase jump between Burst interferograms and interfere with the estimation of geometric registration residual offset by enhanced spectral diversity. The relevant theoretical analysis and data processing experiments have been carried out in this paper. A gross error detection method is proposed to eliminate the interference of phase jump on enhanced spectral diversity registration.
【作者單位】： 湖南科技大學(xué)煤炭資源清潔利用與礦山環(huán)境保護(hù)湖南省重點(diǎn)實(shí)驗(yàn)室;武漢大學(xué)衛(wèi)星導(dǎo)航定位技術(shù)研究中心;
【基金】：國家自然科學(xué)基金(41474014;41674032)~~
【分類號(hào)】：P237
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本文編號(hào)：2184462