If there were no ground remnants,remote sensing didn't have great advantages actually (Liu 2006).
What archaeologists expect most is a new effective archaeological remote sensing technology for archaeological sites without any ground traces existing.
So the latter is of more practical significance in remote sensing archaeology.
From 2003 to 2006, funded by a key project of National High
Technology Research and Development Program of China (863
Program) and National Historical Museum of China, the authors
carried out application research on hyperspectral remote sensing
archaeology about the Mausoleum of the Emperor Qinshihuang
(MEQ) (259-210 BC) and Shenhe loess tableland in Chang'an
county (20km south of Xi'an city), Shaanxi province. Important
discoveries were acquired.