GOES Satellite Hunt
Introduction
Motivation
The Hardware Setup
Assemble Process
Dish Feed
LNA and Filter
Pointing the Antenna
The Demodulator
Binary Phase Shift Keying Modulation
Demodulating BPSK Signal
GNU Radio Flow
Decimating and filtering to desired sample rate
Automatic Gain Control and Root Raised Cosine Filter
Synchronization and Clock Recovery
Symbol Output from GNU Radio
Frame Decoder
Convolution Encoding, Frame Synchronization and Viterbi
Encoding the sync word
Frame Synchronization
Decoding Frame Data
Packet Demuxer
De-randomization of the data
Reed Solomon Error Correction
Virtual Channel Demuxer
Packet Demuxer
Saving the Raw Packet
File Assembler
File Header Processing
LritRice Compression
File Name from Header
Viewing the files content
File Types
LRIT Header Description
0 - Primary Header
1 - Image Structure Header
2 - Image Navigation Record
3 - Image Data Function Record
4 - Annotation Record
5 - Timestamp Record
6 - Ancillary Text
7 - Key Header
128 - Segment Identification Header
129 - NOAA Specific Header
130 - Header Structured Record
131 - Rice Compression Record
132 - DCS Filename Record
Ending
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