diff options
author | Matt Ettus | 2009-09-24 22:34:06 -0700 |
---|---|---|
committer | Matt Ettus | 2009-09-24 22:34:06 -0700 |
commit | 5c46578ba936de57e80594540804c964aa408f73 (patch) | |
tree | cf164f8e3d80b78971fb2987740b7d957ee1f306 /gr-noaa/README | |
parent | 35ada01aa8ae838d6d75bf063725218fa7e18f5f (diff) | |
parent | 16474a0adb44dc81a8338a9c4a9a6dcab6f6328f (diff) | |
download | gnuradio-5c46578ba936de57e80594540804c964aa408f73.tar.gz gnuradio-5c46578ba936de57e80594540804c964aa408f73.tar.bz2 gnuradio-5c46578ba936de57e80594540804c964aa408f73.zip |
Merge commit 'origin' into new_eth
Conflicts:
.gitignore
Diffstat (limited to 'gr-noaa/README')
-rw-r--r-- | gr-noaa/README | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gr-noaa/README b/gr-noaa/README new file mode 100644 index 000000000..d99c0d90a --- /dev/null +++ b/gr-noaa/README @@ -0,0 +1,53 @@ +This component implements an NOAA POES HRPT receiver. After installation, +the scripts described below will be install in the users PATH. + +As the scripts are generated using GRC, GRC must be installed at runtime +in order for them to operate. + + +HRPT Operation +-------------- + +usrp_rx_hrpt.py + +This GUI script will receive HRPT RF, demodulate, synchronize, and deframe +HRPT minor frames into a file. The file stores a series of 11090 word, +16-bits per word corresponding to the HRPT minor frame format (only the +lower 10-bits per word are significant.) + +The script file by default uses USRP side A, 1698 MHz, at decimation 16. A +configuration file 'usrp_rx_hrpt.cfg' in the current working directory will +allow changing this, as well as implementing persistent storage of GUI +entered parameters from invocation to invocation. + +The present HRPT demodulator is only tested at decimation 16. The only other +valid decimation rates are 24 and 32, which may word but with more bit +errors. No other decimation rates will work. + + +demod_hrpt_file.py + +This command-line only script will operate on a file generated with +usrp_rx_cfile.py and output frames in the same format as above. It does +*not* use the configuration file above. + +Usage: demod_hrpt_file.py: [options] + +Options: + -h, --help show this help message and exit + -d DECIM, --decim=DECIM + Set Decimation [default=16] + -p PLL_ALPHA, --pll-alpha=PLL_ALPHA + Set pll_alpha [default=50m] + -s SYNC_ALPHA, --sync-alpha=SYNC_ALPHA + Set sync_alpha [default=50m] + -F FILENAME, --filename=FILENAME + Set Filename [default=usrp.dat] + -o OUTPUT, --output=OUTPUT + Set Output [default=frames.dat] + + +LRIT Operation +-------------- + +The work-in-progress LRIT GRC script is not currently in a usable state. |