NAME

       drs232_ldpc - Horus SSTV reception using the codec2 library.

SYNOPSIS

       drs232_ldpc usage: InputOneBitPerChar OutputPacket [-v[v]]

DESCRIPTION

       Looks  for  a unique word in series of soft decision symbols.  When found, deframes a RS232 encoded frame
       of soft decision bit, LDPC decodes, and outputs a frame of packed bytes.  Used for high  bit  rate  Horus
       SSTV reception.

         Frame format:

           16 bytes 0x55 - 0xabcdef01 UW - 256 bytes of payload - 2 bytes CRC - 65 bytes LPDC Parity

         Each byte is encoded as a 10 bit RS232 serial word:

           0 LSB .... MSB 1

OPTIONS

       The  first argument, InputOneSymbolPerFloat is the file name of a file with Horus encoded bits. If "-" is
       given the input is taken from stdin.

       The second argument, OutputPackets is the file name of a file to be created with modem  sample  data.  If
       "-" is given the output is sent to stdout.

       The optional third argument, [-v] [-vv] set the verbosity of the output.

SEE ALSO

       drs232(1), fdmdv_mod(1), fdmdv_demod(1), fdmdv_get_test_bits(1), fdmdv_put_test_bits(1)

drs232_ldpc                                        2020-12-04                                     DRS232_LDPC(1)