TSC_temperature: 28.400
The time is specified in UTC time the +00:00 is the offset in Hours and Minutes relate to UTC.
Geographic coordinates are in latitude and longitude in the WGS84 horizontal data in decimal degrees.
The geographic_coordinates string format is:
latitude
decimal degrees WGS84 horizontal datum
longitude
decimal degrees WGS84 horizontal datum
altitude
altitude (m) above the geoid. This will be generally be close to the
value of the height you would read on a map in the local
Geoid height
Height of the geoid relative to the WGS84 ellipsoid (vertial
datum)
The radar center frequency is used for reference and is copied from the GPRI2 profile. The values of
RF_freq_min
,
RF_freq_max
, and
RF_chirp_rate
are exact values required for processing the raw
data to produce SLC images, The frequencies are in Hz and the chirp rate in Hz/sec. The number of
samples in the chirp is recorded in the
CHP_num_samp
parameter. The transmit cycle uses 1 more
sample to return to the chirp start frequency as required by the Direct Digital Synthesizer used to
generate the chirp.
The TX_mode parameter specifies the transmitter mode. The value
None
is used for the current Ku-
band GPRI. For C-band operation, 3 modes are supported including
H
: horizontal polarization transmit,
V
: vertical polarization transmit, and
HV
: alternating H and V polarization, starting with H.
The IMA_atten_dB value is value using for IMA attenuation an is copied from the GPRI2 profile.
The
ADC_capture_time
is the actual time that samples are recorded by the Analog-to-digital
converters (ADCs) in the digitizer.
The STP_antenna_start, STP_antenna_end are the starting and ending used in the antenna scan. The
image covers a slightly smaller angular range that is documented in the SLC_par meta data file
produced by
gpri2_proc.py
.
6.6.3 SLC (Single-Look Complex) Data
The detected radar data is store in the SLF file with accompanying slc_par. The data type is indicated in
the slc_par text file. In general the data is in big endian format to be compliant with the standard byte
order in the GAMMA Software. The slc file format is compatible with the GAMMA Software:
Gamma Interferometric SAR Processor (ISP) - Image Parameter File
title: 2010-11-05 10:57:06.025627 CH1 upper
sensor: GPRI 2.0
date: 2010 11 05
start_time: 39426.500665 s
center_time: 39430.776007 s
end_time: 39435.051349 s
azimuth_line_time: 1.008147e-01 s
line_header_size: 0