Full text: Technical Commission IV (B4)

> XXXIX-B4, 2012 
FOR THE 2010s 
JSA 
apping 
in any decade since the 
ed the history of lunar 
port on the outcome of 
0 be done, and what is 
\RT-1 (European Space 
Reconnaissance Orbiter 
ll these spacecraft have 
r altimeters. Chang'e-1, 
ales of 120, 10, 10, and 
le Camera (WAC) and 
aan-l and LRO carried 
adowed areas, and most 
d of coregistration with 
ering. As one example, 
LRO Camera (LROC) 
lata. 
of the LOLA altimetry 
Itimetry have also been 
rest have been prepared 
1ages has begun. Many 
trolled. 
ientific use of the vast 
into a single reference 
ser altimeter data from 
tion of image datasets 
the topographic surface 
provides, based on the 
sets based on the dense 
nt topographic data will 
ralogic features. 
vations, and controlling 
tive and will result in a 
scientific studies. 
se include the possible 
f the lunar gravity field 
Resurs mission planned 
ons are being discussed 
3 (China), SELENE-2 
Robotic Program was 
nar surface, though the 
 continued, the desired 
nultinational analysis of 
ING IN THE 2000s 
nstruments for mapping 
ade 2001-2010. These 
le, the term “impacted 
ately placed on an orbit 
tted from the table are 
the Moon but did not 
S, which was launched 
its south pole, the Moon 
rayaan-1, and the Okina 
International Archives of the Photogrammetry, Remote Sensin 
g and Spatial Information Sciences, Volume XXXIX-B4, 2012 
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 
(V*) subsatellite of Kaguya, which was deorbited at the end of 
its mission. 
  
  
Country Launch End Date 
Mission Agency Date Disposition 
SMART-1 Europe 2003 Sep 7 2006 Sep 3 
ESA Impacted 
Kaguya Japan 2007 Sep 14 2009 Jun 10 
(SELENE) JAXA Impacted 
Chang'e-1 China 2007 Oct 24 2009 Mar 1 
CNSA Impacted 
Chandrayaan-1 India 2008 Jul 7 28 Aug 2009 
ISRO Lost contact 
Lunar USA 2009 Jun 18 Extended 
Reconnaissance NASA mission 
Orbiter (LRO) continuing 
Chang'e-2 China 2010 Oct 1 2011 Jun 8 
CNSA Left orbit 
  
  
  
  
Table 1. Lunar Orbital Missions of the 2000s. 
The first five missions in Table 1 were described in our earlier 
papers, and the reader is directed to Kirk et al. (2008) for a more 
extensive table containing a brief description of the most 
important instruments for mapping on each spacecraft. The 
Chang'e-2 spacecraft was a duplicate of Chang'e-1 and carried 
a similar suite of instruments, but the laser altimeter and CCD 
camera were both improved. Whereas the Chang’e-1 CCD 
obtained 120 m/pixel images from 200 km orbit altitude, the 
new camera was able to obtain global 10 m/pixel coverage from 
a 100 km orbit (Clark 2010). After lowering of the periselene to 
15 km, regional coverage of Sinus Iridium at 1.5 m/pixel was 
obtained to support selecting a landing site for the Chang'e-3 
rover mission planned for 2013. After completion of its orbital 
mission in 2011, Chang'e-2 left lunar orbit and flew to the I2 
Lagrange point of the Earth-Moon system (Xinhua, 201 15. 
All of these missions are considered successful. Perhaps the 
greatest challenges affected Chandrayaan-1, which experienced 
difficulties with thermal control in the lunar orbital 
environment. High temperatures onboard the spacecraft may 
have contributed to the progressive degradation of the attitude 
control system and the eventual loss of contact in 2009 after less 
than half of the two-year planned mission (e.g., Boardman et al. 
2011). Nevertheless, more than 95% of mission objectives were 
judged to have been achieved (The Hindu, 2011). 
22 Cartographic Datasets and Uncontrolled Products 
All of the missions listed in Table 1 carried cameras capable of 
providing key data for lunar mapping, and all but SMART-1 
carried laser altimeters. The nominal resolutions of these 
cameras ranged over more than two orders of magnitude, from 
05-15 m/pixel for LRO's Narrow Angle Camera (LROC 
NAC) and the best Change'e-2 images to 100-120 m/pixel for 
the LRO Wide Angle Camera (WAC) and Chang'e-1 CCD. 
Many of the cameras were designed to collect stereo imagery by 
using the multi-line pushbroom principle. Others were designed 
10 obtain multispectral images. Two of the missions 
(Chandrayaan-1 and LRO) carried polarimetric synthetic 
aperture radars (SAR) capable of imaging the interior of 
shadowed regions near the poles at ground sample distances 
from 7.5 to 75 m/pixel. Collectively, the missions also carried a 
Wide variety of imaging and profiling spectrometers and other 
Femote sensing instruments such as thermal and ultraviolet 
imagers. These instruments are secondary in a cartographic 
Sense; although their data are scientifically very valuable, their 
resolutions are generally lower, and as a result, their products 
are usually tied to the primary control networks defined by 
altimeter and camera data as opposed to contributing to the 
definition of these networks. 
221  SMART-1: The Advanced Moon micro-Imager 
Experiment (AMIE) camera was a pushframe design, with 
multiple color filters directly bonded to a 1024 x 1024 pixel 
CCD detector (Pinet et al. 2005). More than 32,000 images 
were obtained, with resolution generally increasing toward the 
south pole (Grieger et al. 2008). Mosaics have been made (e.g. 
Despan et al. 2008) but only a limited number have been 
released. The raw and calibrated image data are available in 
NASA Planetary Data System (PDS) format through the ESA 
Planetary Science Archive at http://www rssd esa.int/index php 
?projectzPSA &page-smart1 . 
2.2  Kaguya: The LALT (Laser ALTimeter; Araki et al. 
2009) recorded more than 20 million shots, of which 10 million 
had high quality orbital data and were used for topographic 
modeling (Araki, 2012). The Lunar Imager/Spectrometer 
System (LISM; Haruyama et al. 2008) included the Terrain 
Camera (TC), a 10 m/pixel pushbroom camera with fore- and 
aft-looking detector lines and the Multiband Imager (MI), a 20 
m/pixel framing camera with 5 visible and 4 near infrared 
bands, as well as the Spectral Profiler (SP), a 296-band point 
instrument. Nearly complete global image coverage was 
obtained with both morning and evening illumination. An 
uncontrolled 10 m/post global DTM has been produced by 
stereoanalysis of the TC images (Haruyama et al. 2012). The 
SELENE Data Archive at http://12db selene darts .isas jaxa.jp/ 
index .html.en contains ~6 GB of LALT, 13 TB of TC,and 16 
TB of MI data in PDS format. These products include high level 
derived products (topographic and image maps), but 
unfortunately do not include the geometrically raw TC images. 
223 Chang’e: The Laser Altimeter (LAM; Li et al. 2010b) 
on Chang'e-1 recorded more than 9 million shots, of which ~3.2 
million were useful for topographic mapping (Huang et al. 
2010). These data were used to make both gridded DTMs (or 
“DEMs”; Cai et al. 2009; Li et al. 2010b) and 360 degree/order 
spherical harmonic models (Huang et al. 2010; Su et al. 2011). 
Nearly complete image coverage was obtained with the CCD 
camera, a 120 m/pixel 3-line pushbroom scanner. The data were 
used to assemble a global image mosaic (Li et al. 2010a). This 
mosaic could be described as semicontrolled, in that the 
positions of some images were adjusted to bring them into <2 
pixel agreement with neighboring orbit strips. The CCD images 
have also been used to produce controlled (to LAM) DTMs 
with 500 m grid spacing (Liu et al. 2009). In addition, infrared 
spectral images were obtained at 200 m/pixel by the IIM 
(Interferometer Spectrometer) instrument. Approximately 7.5 
TB of Chang'e-1 data are publically available in PDS format at 
http://159.226.88.59:7779/CE10utWeb/, with an English lang- 
uage version of the website planned (Zuo et al. 2011). The 
archive includes both raw and derived products, but unfortu- 
nately trajectory data for the mission are not being released (K. 
Di, pers. comm. 2011). Chang’e-2 data totalling another 3.9 TB 
will be added to the archive when their proprietary period 
expires. This delivery is likely to include the recently released 7 
m/pixel global CCD-2 image mosaic (Xinhua 2012a; 
http://159.226.88.30:8080/CE2release/cesMain Jsp) 
224 Chandrayaan-1: The Lunar Laser Ranging Instrument 
(LLRI) and Terrain Mapping Camera (TMC), a 5 m/pixel three- 
line stereo pushbroom scanner, were the primary cartographic 
instruments on Chandrayaan-1 (Goswami and Annadurai 2009). 
The payload also included the Hyperspectral Imager (HySI) and 
Smart Infrared Spectrometer (SIR-2). The premature 
termination of the mission, and the attitude control difficulties 
prior to that, undoubtedly reduced their coverage from what was 
planned. Production of DTMs and orthoimages from the TMC 
images is nevertheless proceeding (Krishna et al. 2009; 
Radhadevi et al. 2011; Krishna et al. 2012). A public archive of 
PDS-formatted mission data is planned (Krishna et al. 2010), 
but the website http://www.issdc. gov.in/ is not yet populated 
with data as of April 2012. 
More information is available about the US-provided Mini-RF 
Forerunner radar, also known as Mini-SAR, and the Moon 
Mineralogy Mapper (M’) infrared imaging spectrometer. Mini- 
RF (Spudis et al. 2010) collected 75 m/pixel S-band (12.6 cm 
459 
 
	        
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