Housing Vacancy Rate in Major Cities in China: Perspectives from Nighttime Light Data

Table 2

Comparison of the parameters of different NTL images.

Satellite	DMSP/OLS	NPP/VIIRS	Luojia1-01
Operator	DOD	NASA/NOAA	Wuhan University
Available period	1992–2013	November 2011–present	June 2018–present
Spectrum range	0.5–0.9 μm	0.5–0.9 μm	0.46–0.98 μm
Orbit height	830 km	830 km	645 km
Spatial resolution	2.7 km	742 m	130 m
Swath	3000 km	3000 km	250 km
Regression cycle	12 h	12 h	15 d
Saturation	Saturation	Not saturated	Not saturated
On-board calibration	No	Yes	Yes