LROC Binned Data Record Narrow Angle Camera Pole (BDRNPL)
BDRNPL – Binned Data Record Narrow Angle Camera Pole
Instrument: Lunar Reconnaissance Orbiter Camera
PDS3 Data Set ID: LRO-L-LROC-5-RDR-V1.0 DOI: 0.17189/1520341 Citations of DOI: 10.17189/1520341
PDS4 Bundle: urn:nasa:pds:lro-l-lroc-5-rdr DOI: 10.17189/a6a1-mw73 Citations of DOI: 10.17189/a6a1-mw73
For more information about LROC BDR products, see the RDR Product SIS.
For more information about the PDS3 volume, see the LROC Archive Volume SIS.
The Lunar Reconnaissance Orbiter Camera (LROC) Binned Data Record Narrow Angle Camera Pole (BDRNPL) data products contain uncontrolled mosaic of LROC NAC images of the North pole and South pole of the Moon, controlled mosaics with an average pixel value, and NAC mosaics of Permanently Shadowed Regions near the pole.
The LROC NAC pole uncontrolled mosaic is an uncontrolled mosaic product of images of the lunar North or South pole, projected in Polar Stereographic with a scale of 1 m/px at the pole. NAC polar basemap mosaics are organized into quadrangles such that the non-compressed pyramidal TIFFs (included with the Browse products) are less than 4 GB, and the latitude and longitude boundaries are round numbers. At l meter pixel scales, products are organized into 40 quadrangles for each pole covering 90 to 85.5˚ (N or S) latitude and 0 to 360˚ longitude as shown in below figure. The four quadrangles adjacent to the pole cover 1.5° of latitude, while each of the other quadrangles cover 1.0˚ of latitude. The longitude range for each quadrangle depends on the latitude coverage as shown in the table below. At 1-meter scale the images will typically be about 45,000 x 45,000 pixels or about 2,000 megapixels. At lower resolutions, mosaics are organized to have similar quadrangle sizes. For the 20-meter scaled NAC_POLE_PSR mosaics of the permanently shadowed regions with a latitude range of 80° (N or S) to the pole, each mosaic is stored as a single quadrangle with a file size of 3.44 GB for the PDS product. The basemaps are available in a Polar Stereographic projection. For the Polar Stereographic projection, the quadrangles share the same reference center latitude (CLAT = ±90.0) and longitude (CLON = 0.0). With a common reference, it is possible to generate composite quadrangles by mosaicking individual quadrangles without the need for reprojection.
Polar Stereographic quadrangle layout
Polar Stereographic uncontrolled quadrangle
|
Latitude Range |
# Quads |
Quadrangle Longitude Coverage |
|
90.0 – 88.5 |
4 |
90° | 0-90, 90-180, 180-270, 270-360 |
|
88.5 – 87.5 |
8 |
45° | 0-45, 45-90, 90-135, 135-180, etc. |
|
87.5 – 86.5 |
12 |
30° | 0-30, 30-60, 60-90, etc. |
| 86.5 – 85.5 |
16 |
22.5°/ 0-22.5, 22.5-45, 45-67.5, etc. |
|
Total: |
40 |
The NAC Pole controlled mosaics with an average pixel value consist of 9687 NAC images of the lunar north polar region acquired between 2009 and 2014 and 18323 NAC images of the lunar south polar region acquired between 2009 and 2013. Control solutions were performed using the ISIS jigsaw application using 405,532 points and over three million measures. The network was constrained using 16,302 points in 226 images at north and 1,677,811 points and over 14 million measures in the south that were tied to Lunar Orbiter Laser Altimeter (LOLA) track data. The residuals from the bundle adjustment performed by ISIS jigsaw were (in pixels) a Sol: at north pole, with variance of 0.40, a mean of 0.52, a standard deviation of 0.48, and a maximum of 13.0; at south, with variance of 0.38, 0.27 at the first and third quartile, and 0.8 at 2-sigma. The illumination mosaics were created by selecting images with similar sub-solar longitudes and layering the images such that the most representative image (closest sub-solar point) is on top. These mosaics provide an idea of what the surface looks like with varying degrees of sub-solar azimuths. The illumination mosaics only cover some of the polar region; therefore, blank tiles containing no NAC data are omitted from the archive. The images were map projected using a polar digital elevation model derived from LOLA tracks. The mosaic range is 84 to 90 degrees and is stored as 40 polar stereographic map tiles.
Polar Stereographic controlled quadrangle
|
Latitude Range |
# Quads |
Quadrangle Longitude Coverage |
|
90.0 – 88.5 |
4 |
90° | 0-90, 90-180, 180-270, 270-360 |
|
88.5 – 87.0 |
8 |
45° | 0-45, 45-90, 90-135, 135-180, etc. |
|
87.0 – 85.5 |
12 |
30° | 0-30, 30-60, 60-90, etc. |
| 85.5 – 84.0 |
16 |
22.5°/ 0-22.5, 22.5-45, 45-67.5, etc. |
|
Total: |
40 |
LROC BDRNPL products have the following file names:
NAC_POLE_PaaaHoooo.IMG - NAC Pole uncontrolled mosaics
NAC_POLE_d_CM_AVG_PaaaHoooo.IMG - NAC Pole controlled mosaic with an average pixel value
NAC_POLE_PSR_d(_**).IMG - NAC mosaics of Permanently Shadowed Regions near the pole
where:
P indicates the map projection (P=Polar Stereographic)
aaa = center latitude to the tenth of a degree
H = pole (N or S)
d = pole (NORTH or SOUTH)
oooo = center longitude to the tenth of a degree East
** = _STRETCH, mosaics with equalized brightness
In ODE, BDRNPL products have the following product IDs:
NAC_POLE_PAAAHOOOO - NAC Pole uncontrolled mosaics
NAC_POLE_D_CM_AVG_PAAAHOOOO - NAC Pole controlled mosaic with an average pixel value
NAC_POLE_PSR_D(_STRETCH) - NAC mosaics of Permanently Shadowed Regions near the pole