LRO Mini-RF Calibrated Data Record (CDR)

CDR – Calibrated Data Record

PDS Data Set ID: LRO-L-MRFLRO-4-CDR-V1.0DOI: 10.17189/1520644Citations of DOI: 10.17189/1520644

For more information about CDR products, see the Mini-RF Data Product SIS.

For more information about Mini-RF products, see the Mini-RF Archive Volume SIS.

The Mini-RF (MRFLRO) Level 1 Calibrated Data Products (CDRs) are SAR images in range and azimuth orientation with pixel values in beta naught, which have been radiometrically and polarmetrically calibrated. Each cross-product image file contains simple lines of pixels. Each pixel consists of four 4-byte floating point numbers for a total of 16 bytes. The first two floating point numbers are the image intensity values for the horizontal (H) and vertical (V) channel receive. The second two numbers are the real and imaginary parts of the single complex number which gives the cross power intensity image between the H & V receive. H & V represent the complex amplitudes of the horizontal and vertically polarized backscatter respectively. An '*' represents a complex conjugate of H or V. The Level 1 products are the lowest level usable science data products.

MRFLRO CDR products have the following file names:

Lfm_nnnnn_1CD_XrU_aahddd_Vz.xxx (with one detached PDS label for the data file)

where:

L = LRO

f = frequency band

S = S-band

X = X-band

m = radar mode

B = Baseline SAR

Z = Zoom

nnnnn = orbit number

X = N/A (for Raw, Level 1, Housekeeping, cal, etc.)

r = pixel resolution bin scale in pixels per degree (ppd)

G = 64

H = 128

I = 256

K = 1024

B = data type of bytes

aa = lunar latitude of the center of the bistatic image, range 0 to 90 degrees

h = hemisphere of the latitude, N for northern latitude or S for southern latitude

ddd = lunar longitude of the center of the bistatic image, range 0 to 359 degrees

z = product version number

xxx = file extension

IMG = processed image file

TXT = unstructured text data (e.g., parameter files)

In ODE, CDR products have the following product IDs:

LFM_NNNNN_1CD_XRU_AAHDDD_VZ