Overall scheme and on-orbit images of Chang’E-2 lunar satellite CCD stereo camera

Abstract

The goals of engineering and scientific missions for Chang'E-2 lunar satellite require high detection sensitivity and large imaging dynamic range for the onboard CCD cameras. The TDI CCD image sensor was adopted for the two linear CCD stereo cameras for the first time in the lunar reconnaissance of the world. The design argumentation is described in this paper. The analysis shows that the imagers meet the mission requirements. The satellite was launched on 1 October 2010 at zero window. The cameras obtained images of 7 m resolution on the 100 km orbit for the first time on 24 October 2010, and operated once again on 27 October 2010 to take stereo images of the Sinus Iridum with the resolution better than 1.5 m. On the near-moon-arc of 15 km×100 km elliptical orbit, the images are very clear and rich of grey scales, indicating successful completion of the Chang'E-2 engineering mission. At the present the cameras are acquiring the full lunar surface stereo images with 7 m resolution on the 100 km circular orbit to complete their scientific mission. lunar satellite, Chang'E -2, CCD stereo camera, engineering and scientific target, Sinus Iridum image Citation:Zhao B C, Yang J F, Wen D S, et al. Overall scheme and on-orbit images of Chang'E-2 lunar satellite CCD stereo camera.

Mapping Landslides in Lunar Impact Craters Using Chebyshev Polynomials and Dem’s

“…see Crosilla et al, 2013) are worth to be applied. In the future, data from the Chinese mission Chang'E 2 will be also considered due to their similar spatial resolution (Zhao et al, 2011). Further studies will include: the measurement of the landslide volume; the analysis of relationships between landslides and characteristics of the hosting craters as well as the surrounding terrain; the lithological and mineralogical characterization of surfaces using multispectral data acquired by the sensor IIM (Imaging Interferometer Spectrometer) mounted on Chang'E 1 (Sun et al, 2005), comparing the data with available spectral libraries.…”

An Initiative for Construction of New-Generation Lunar Global Control Network Using Multi-Mission Data

“…2.1.1 Chang'e-2 stereo images: Launched on October 1, 2010, the Chang'e-2 (CE-2) orbiter carried a high-resolution CCD stereo camera, which acquired images with a spatial resolution of 7 m and 1.05 m respectively at the flight heights of 100 km and 15 km (Zhao et al, 2011). The CE-2 CCD camera consists of two line arrays that are separately fixed on the same focal plane, thus offering forward-and backward-looking stereo images (viewing angle 7.98 and -17.2 degrees respectively) in the same track through push-broom imaging.…”

The ‘Moon Mapping’ Project to Promote Cooperation Between Students of Italy and China

“…100 km), and 1.5 m around the perilune (minimum distance from ground of approx. 15 km), see Zhao et al (2011). Further studies will include: the measurement of the landslide volume; the analysis of relationships between landslides and characteristics of the hosting craters as well as the surrounding terrain; the lithological and mineralogical characterization of surfaces using multispectral data acquired by the IIM data from CE-1.…”