A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data

Table 1

Specifications of altimetry instrument on CE-1/SELENE/LRO.

	CE-1	SELENE	LRO
Orbit altitude	200 km	100 km	50 km
Instrument	Laser AltiMeter	Laser ALTtimeter	Lunar Orbiter Laser Altimeter
Ranging error	5 m	4.1 m	<1 m
Sampling rate	1 Hz	1 Hz	28 Hz
Radial orbit error	15 m	1 m	1 m
3D orbit error	~200 m	~50 m	~20 m
Footprint	<200 m	~40 m	5 m/beam