| Index |
Identifier |
Field Type |
Field Length |
Description |
Units |
| 0 |
"zero_doppler_time" |
MJD |
1 |
Zero doppler time at which SQ information applies |
MJD |
| 1 |
"attach_flag" |
UChar |
1 |
Attachment Flag. Set to 1 if PF-ASAR was unable to produce an
imagette for the wave cell. The fields in other DSR's corresponding
to this one are set to zero, apart from the Zero Doppler Time. |
flag |
| 2 |
"input_mean_flag" |
UChar |
1 |
Input data mean outside nominal range flag0 = mean of I and Q
input values are both within specified range from expected mean.
For expected mean of x, the measured mean must fall between
x-threshold to x+threshold.1 = otherwise |
flag |
| 3 |
"input_std_dev_flag" |
UChar |
1 |
Input data standard deviation outside nominal range flag0 =
standard deviation values of I and Q input values are both within
specified range of expected standard deviation. For expected std.
dev. x, the measured std. dev. must fall between x-threshold
to |
flag |
| 4 |
"input_gaps_flag" |
UChar |
1 |
Significant gaps in the input data flagAn input data gap is
defined as a contiguous block of N missing lines (the value of N is
predefined for each product)0 = number of input gaps <=
threshold value1 = number of input data gaps > threshold
value |
flag |
| 5 |
"input_missing_lines_flag" |
UChar |
1 |
Missing lines significant flag 0 = percentage of missing lines
<= threshold value 1 = percentage of missing lines >
threshold valueThe number of missing lines is the number of lines
missing from the input data excluding data gaps. |
flag |
| 6 |
"dop_cen_flag" |
UChar |
1 |
Doppler Centroid Uncertain flag0 = confidence measure >=
specified value1 = Error message generated if confidence measure
< specified value(note: if more than one Doppler centroid
estimation is performed in a slice the flag is set if any
confidence measur |
flag |
| 7 |
"dop_amb_flag" |
UChar |
1 |
Doppler ambiguity estimate uncertain flag0 = confidence measure
>= specified value1 = confidence measure < specified
value |
flag |
| 8 |
"output_mean_flag" |
UChar |
1 |
Output data mean outside nominal range flag0 = mean of I and Q
output values for SLC image or mean of detected pixels for a
detected product, are both within specified range from expected
mean. For expected mean of x, the measured mean must fall between
x |
flag |
| 9 |
"output_std_dev_flag" |
UChar |
1 |
Output data standard deviation outside nominal range flag0 =
std. dev. of I and Q output values for SLC image or std. dev. of
detected pixels for a detected product, are both within specified
range from expected std. dev. For expected std. dev. of x, the |
flag |
| 10 |
"chirp_flag" |
UChar |
1 |
Chirp extraction failed or is of low quality flag 0 = able to
extract all chirps or chirp extraction not requested (nominal chirp
used) AND all quality measures were acceptable.1 = unable to
extract a chirp during processing and chirp extraction was
reque |
flag |
| 11 |
"missing_data_sets_flag" |
UChar |
1 |
Data sets missing flag0 = all data sets which are supposed to
be in the product are present1 = any data sets (including ADSs) are
missing from the product which are supposed to be included under
normal circumstances. Which data sets are missing can be det |
flag |
| 12 |
"invalid_downlink_flag" |
UChar |
1 |
Invalid downlink parameters flag0 = all parameters read from
the downlinked data were valid1 = displayed if any downlink
parameter is out of range and therefore a default value has been
used during processing. |
flag |
| 13 |
"spare_1" |
Spare |
1 |
Spare |
- |
| 14 |
"thresh_chirp_broadening" |
Float |
1 |
Threshold for setting the chirp quality flag. Maximum
percentage broadening permitted in cross-correlation pulse width
compared to theoretical width. |
% |
| 15 |
"thresh_chirp_sidelobe" |
Float |
1 |
Threshold for setting the chirp quality flag - First sidelobe
of the chirp cross correlation function |
dB |
| 16 |
"thresh_chirp_islr" |
Float |
1 |
Threshold for setting the chirp quality flag - ISLR of the
chirp cross correlation function |
dB |
| 17 |
"thresh_input_mean" |
Float |
1 |
Threshold for setting the mean of input data quality flag - For
an expected mean value of x, this is the value T, such that the
measured mean must fall between the x-T and x+T. |
- |
| 18 |
"exp_input_mean" |
Float |
1 |
Expected mean input value for this product for both I and
Q. |
- |
| 19 |
"thresh_input_std_dev" |
Float |
1 |
Threshold for setting the standard deviation of input data
quality flag - For an expected std. dev. value of y, this is the
value D, such that the measured std. dev. must fall between the y-D
and y+D. |
- |
| 20 |
"exp_input_std_dev" |
Float |
1 |
Expected input std. dev. for this product for both I and
Q. |
- |
| 21 |
"thresh_dop_cen" |
Float |
1 |
Threshold for setting the Doppler Centroid quality flag -
Threshold for Doppler Centroid confidence |
- |
| 22 |
"thresh_dop_amb" |
Float |
1 |
Threshold for setting the Doppler Centroid ambiguity quality
flag - Threshold for setting the Doppler Centroid ambiguity
confidence flag |
- |
| 23 |
"thresh_output_mean" |
Float |
1 |
Threshold for setting the mean of output data quality flag -
For an expected mean value of x, this is the value T, such that the
measured mean must fall between the x-T and x+T. |
- |
| 24 |
"exp_output_mean" |
Float |
1 |
Expected mean output value for this product. For an SLC product
this is the expected mean of both the I and Q values. |
- |
| 25 |
"thresh_output_std_dev" |
Float |
1 |
Threshold for setting the standard deviation of output data
quality flag - For an expected std. dev. value of y, this is the
value D, such that the measured std. dev. must fall between the y-D
and y+D. |
- |
| 26 |
"exp_output_std_dev" |
Float |
1 |
Expected output std. dev. for this product. For an SLC product
this is the expected output std. dev. for both I and Q values. |
- |
| 27 |
"thresh_input_missing_lines" |
Float |
1 |
Threshold for setting the missing lines quality flag - maximum
percentage of missing lines to total lines. |
% |
| 28 |
"thresh_input_gaps" |
Float |
1 |
Threshold for setting the missing gaps quality flag - maximum
number of missing gaps allowed. |
- |
| 29 |
"lines_per_gaps" |
ULong |
1 |
Number of missing lines which constitute a gap |
lines |
| 30 |
"spare_2" |
Spare |
1 |
Spare |
- |
| 31 |
"input_mean" |
Float |
2 |
Input data mean (i channel, q channel |
- |
| 32 |
"input_std_dev" |
Float |
2 |
Input data standard deviation (i channel, q channel) |
- |
| 33 |
"num_gaps" |
Float |
1 |
Number of gaps (composed of a predetermined number of
consecutive missing lines) |
- |
| 34 |
"num_missing_lines" |
Float |
1 |
Number of missing lines (excluding gaps) |
- |
| 35 |
"output_mean" |
Float |
2 |
Output data mean (detected samples, followed by zero, or i
channel followed by q channel for SLC) |
- |
| 36 |
"output_std_dev" |
Float |
2 |
Output data standard deviation (detected samples followed by
zero, or i channel followed by q channel for SLC) |
- |
| 37 |
"tot_errors" |
ULong |
1 |
Total number of errors detected in ISP headers |
- |
| 38 |
"Spare_3" |
Spare |
1 |
Spare |
- |
| 39 |
"land_flag" |
UChar |
1 |
Land Flag 0 = no land in imagette1 = land in imagette |
flag |
| 40 |
"look_conf_flag" |
UChar |
1 |
Look image statistics confidence parameter flag 1 = The ratio
of the standard deviation to the mean of the first look image is
outside the range given by a minimum and a maximum threshold.0
=otherwise |
flag |
| 41 |
"inter_look_conf_flag" |
UChar |
1 |
Inter-look confidence statistics confidence parameter flag1 =
The normalised deviation of the two inter-look sub-images is
greater than a maximum threshold.0 = otherwise |
flag |
| 42 |
"az_cutoff_flag" |
UChar |
1 |
Azimuth cut-off convergence measure flag1 = The normalised RMS
error between the fitted co-variance profile is greater than a
maximum threshold.0 = otherwise |
flag |
| 43 |
"az_cutoff_iteration_flag" |
UChar |
1 |
Azimuth cut-off Iteration count overflow flag1 = The Azimuth
cut-off fit did not converge within a minimum number of
iterations.0 = otherwise |
flag |
| 44 |
"phase_flag" |
UChar |
1 |
Phase information confidence measure flag1 = The imaginary
spectral peak is less than a minimum threshold, and the zero lag
shift is greater than a minimum threshold.0 = otherwise |
flag |
| 45 |
"spare_4" |
Spare |
1 |
Spare |
- |
| 46 |
"look_conf_thresh" |
Float |
2 |
Look image statistics confidence parameter thresholds (minimum
and maximum) |
- |
| 47 |
"inter_look_conf_thresh" |
Float |
1 |
Inter-look confidence statistics confidence parameter
threshold |
- |
| 48 |
"az_cutoff_thresh" |
Float |
1 |
Azimuth cut-off convergence measure threshold |
- |
| 49 |
"az_cutoff_iterations_thresh" |
ULong |
1 |
Azimuth cut-off Iteration count overflow threshold |
- |
| 50 |
"phase_peak_thresh" |
Float |
1 |
Phase information confidence measure threshold for the spectral
peak |
- |
| 51 |
"phase_cross_thresh" |
Float |
1 |
Phase information confidence measure threshold for cross
covariance peak offset |
m |
| 52 |
"spare_5" |
Spare |
1 |
Spare |
- |
| 53 |
"look_conf" |
Float |
1 |
Look image statistics confidence parameterThe ratio of the
standard deviation to the mean of the first look image |
- |
| 54 |
"inter_look_conf" |
Float |
1 |
Inter-look confidence statistics confidence parameter.The
normalised deviation of the two inter-look sub-images |
- |
| 55 |
"az_cutoff" |
Float |
1 |
Azimuth cut-off convergence measureThe normalised RMS error
between the fitted co-variance profile |
- |
| 56 |
"phase_peak_conf" |
Float |
1 |
Phase information confidence measure for the spectral peakThe
imaginary spectral peak |
- |
| 57 |
"phase_cross_conf" |
Float |
1 |
Phase information confidence measure for cross covariance peak
offset |
m |
| 58 |
"spare_6" |
Spare |
1 |
Spare |
- |
