Ryan Malloy
0ee7ff0ad7
Complete signal processing pipeline from complex baseband to decoded PCM telemetry, verified against the 1965 NAA Study Guide (A-624): Core demod (Phase 1): - PM demodulator with carrier PLL recovery - 1.024 MHz subcarrier extractor (bandpass + downconvert) - BPSK demodulator with Costas loop + symbol sync - Convenience hier_block2 combining subcarrier + BPSK PCM frame processing (Phase 2): - 32-bit frame sync with Hamming distance correlator - SEARCH/VERIFY/LOCKED state machine, complement-on-odd handling - Frame demultiplexer (128-word, A/D voltage scaling) - AGC downlink decoder (15-bit word reassembly from DNTM1/DNTM2) Voice and analog (Phase 3): - 1.25 MHz FM voice subcarrier demod to 8 kHz audio - SCO demodulator for 9 analog sensor channels (14.5-165 kHz) Virtual AGC integration (Phase 4): - TCP bridge client with auto-reconnect and channel filtering - DSKY uplink encoder (VERB/NOUN/DATA command sequences) Top-level receiver (Phase 5): - usb_downlink_receiver hier_block2: one block, complex in, PDUs out - 14 GRC block YAML definitions for GNU Radio Companion - Example scripts for signal analysis and full-chain demo Infrastructure: - constants.py with all timing/frequency/frame parameters - protocol.py for sync word + AGC packet encode/decode - Synthetic USB signal generator for testing - 222 tests passing, ruff lint clean
45 lines
1.0 KiB
YAML
45 lines
1.0 KiB
YAML
id: apollo_uplink_encoder
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label: Apollo Uplink Encoder
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category: '[Apollo USB]'
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flags: [python]
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parameters:
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- id: channel
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label: INLINK Channel
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dtype: int
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default: '37'
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inputs:
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- label: command
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domain: message
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outputs:
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- label: uplink_words
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domain: message
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templates:
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imports: from apollo import uplink_encoder
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make: >-
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apollo.uplink_encoder.uplink_encoder(
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channel=${channel})
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documentation: |-
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Apollo Uplink Command Encoder
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Converts high-level DSKY commands into AGC INLINK word sequences
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suitable for delivery via the AGC Bridge block.
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Accepts command PDUs with metadata containing:
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"type": "VERB", "NOUN", "DATA", or "PROCEED"
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"data": integer value (verb/noun number or data word)
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Emits one PDU per keystroke in the encoded sequence.
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For example, V37 emits 3 PDUs: VERB key, digit 3, digit 7.
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Connect the uplink_words output to the AGC Bridge uplink_data input.
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Parameters:
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channel: AGC I/O channel for uplink (default 37 = octal 045 INLINK)
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file_format: 1
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