structure name: one_second
Description
A
TAI93_time
whole second
value starting before and continuing beyond one orbit
B
alert_summary
Order of
categories (low to high) with 2 bits each:
Instrument, Platform, External factors, Processing algorithms
bits 1,3,5,7 Fatal, bits 2,4,6,8 Warning
C
instrument_alert
status of
instrument - each bit corresponds with a status item (see below)
D
platform_alert
status of
platform - each bit corresponds with a status item (see below)
E
external_alert
status of
external factors- each bit corresponds with a status item (see
below)
F
processing_alert
status of
processing algorithms- each bit corresponds with a status item
(see below)
G
position_vector
location
of platform in ECR coordinates (m)
H
velocity_vector
velocity
of platform in ECR coordinates (m/s)
I
transform_matrix
components
of transform from pixel plane-boresight coordinates to ECR coordinates
of boresight and pixel plane
J
solar_vector
unit vector
from center of earth to sun in ECR coordinates
K
ephemeris_quality_flag
As reported
by TRMM, except for local bits 24 & 25, which are defined as follows:
00 -> 2 line elements; set bit 10 (repaired data); also set 1
01 -> raw ace data exists and was used; if interpolated over 10
sec set bit 10; set 1
10 -> gps data used , no ace data, if interpolated over 360 sec
set bit 10; set 1
11 -> gps and raw ace data compared, gps used
L
attitude_quality_flag
As reported
by TRMM, except for local bits 24 & 25, which are defined as follows:
00 -> model using 2 line elements; set bit 10 (repaired data);
set 1
01 -> filtered model using 2 line elements; set bit 10 (repaired
data)
10 -> raw ace data
11 -> filtered ace data; set bit 10 (repaired data); set 1
M
boresight_threshold
the most
likely threshold value applied to the boresight position given
the solar zenith angle asssuming a cloud was present
N
thresholds
values of
the instrumental threshold settings
O
(percent signal)
noise_index
a metric
that indicates the noise level
P
event_count
fields populated
with the raw event count and counts surviving filter stages on
a one second basis