無人機航測是傳統航空攝影測量手段的有力補充，具有機動靈活、高效快速、精細準確、作業成本低、適用范圍廣、生產周期短等特點，在小區域和飛行困難地區高分辨率影像快速獲取方面具有明顯優勢，隨著無人機與數碼相機技術的發展，基于無人機平臺的數字航攝技術已顯示出其獨特的優勢，無人機與航空攝影測量相結合使得“無人機數字低空遙感”成為航空遙感領域的一個嶄新發展方向，無人機航拍可廣泛應用于國家重大工程建設、災害應急與處理、國土監察、資源開發、新農村和小城鎮建設等方面，尤其在基礎測繪、土地資源調查監測、土地利用動態監測、數字城市建設和應急救災測繪數據獲取等方面具有廣闊前景。

UAV aerial survey is a powerful supplement to traditional aerial photogrammetry. It has the characteristics of flexibility, high efficiency, precision and accuracy, low operating cost, wide application range, short production cycle, etc. It has obvious advantages in fast acquisition of high-resolution images in small areas and areas with difficult flight. With the development of UAV and digital camera technology, digital aerial photography technology based on UAV platform has shown its unique advantages. Combined with aerial photogrammetry, "UAV digital low-altitude remote sensing" has become a brand-new development direction in the field of aerial remote sensing. UAV aerial photography can be widely used in national major engineering construction, disaster emergency and treatment, land supervision, resource development, new countryside and small town construction, etc., especially in basic surveying and mapping, land resources survey and monitoring, land use dynamic monitoring, digital city construction and emergency relief surveying and mapping data acquisition.