【摘要】：為研究輕小型機(jī)載LiDAR的航線設(shè)計(jì),以VUX-1型激光掃描儀為例,計(jì)算多周期回波(multi time around,MTA)對(duì)飛機(jī)作業(yè)高度的限制;根據(jù)要求的點(diǎn)云密度、掃描頻率、掃描線速度等指標(biāo),依照航空攝影測(cè)量原理以及機(jī)載LiDAR數(shù)據(jù)獲取規(guī)范,從中區(qū)別機(jī)載LiDAR與傳統(tǒng)攝影測(cè)量學(xué)的不同,并借鑒機(jī)載LiDAR的數(shù)據(jù)采集方式與傳統(tǒng)掛載專業(yè)相機(jī)的攝影測(cè)量的相似之處,判定在不同情形下激光的測(cè)距變化(例如測(cè)區(qū)內(nèi)不同類型的目標(biāo)反射率不同或大氣能見度不同導(dǎo)致的最遠(yuǎn)測(cè)距能力的變化等);在考慮以上問(wèn)題基礎(chǔ)上,對(duì)機(jī)載LiDAR系統(tǒng)進(jìn)行航線設(shè)計(jì);最后分別對(duì)比旁向點(diǎn)間距和航向點(diǎn)間距的誤差,分析其原因并判定該航線設(shè)計(jì)方案的可行性。
[Abstract]:In order to study the route design of light and small airborne LiDAR, taking the VUX-1 laser scanner as an example, the limitations of multi-period echo (multi time around,MTA) on the altitude of aircraft are calculated. According to the required point cloud density, scanning frequency, scanning line velocity and so on, according to the principle of aerial photogrammetry and the data acquisition specification of airborne LiDAR, the differences between airborne LiDAR and traditional photogrammetry are distinguished. And draw lessons from the similarity between the data acquisition method of airborne LiDAR and the photogrammetry of traditional mounted professional camera. To determine the variation of laser ranging in different cases (e.g. the variation of farthest ranging capability caused by different types of target reflectivity or visibility in the atmosphere, etc.); On the basis of considering the above problems, the route design of airborne LiDAR system is carried out, and finally, the errors of side point spacing and course point spacing are compared, the reasons are analyzed and the feasibility of the route design scheme is judged.
【作者單位】： 首都師范大學(xué)資源環(huán)境與旅游學(xué)院;首都師范大學(xué)三維信息獲取與應(yīng)用教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目“基于結(jié)構(gòu)特征的車載激光掃描系統(tǒng)外方位元素在線標(biāo)定方法研究”(編號(hào):41371434) 測(cè)繪地理信息公益性行業(yè)科研專項(xiàng)項(xiàng)目“新一代多平臺(tái)多波段移動(dòng)信息采集系統(tǒng)研制”(編號(hào):201412020)共同資助
【分類號(hào)】：TN958.98
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本文編號(hào)：2298864