Chapter 10 Telemetry Downlink Zodiac Data Systems ZODIAC

Chapter 10 Telemetry Downlink Zodiac Data Systems ZODIAC AIRCRAFT SYSTEMS

Presentation overview Topics: • • • Telemetry downlink methods today The new chapter 10 asynchronous packet downlink airborne method Chapter 10 telemetry downlink packet format Telemetry downlink filter possibilities The ground segment ZODIAC AIRCRAFT SYSTEMS

Telemetry Downlink Methods Today • Most Telemetry today utilizes IRIG 106, Class I or II, Chapter 4 PCM stream formats • Tedious job periodic sampling of asynchronous data and placing it into PCM Stream • It can be challenging and requires extensive testing • Repeated samples • Often requires excess bandwidth to insure data is not missed ZODIAC AIRCRAFT SYSTEMS

Current Airborne System Architectures • Recorders are typically used for capturing bus communications, video (HD/SD), high rate analog and output from FTI Encoders, buses (Total Data Capture). • Recording standard is in IRIG 106 Chapter 10 Format • Encoders • Typically capturing transducers and selected data from busses for insertion into Time Division Multiplexed PCM Data Streams • Trend: Network output from Telemetry Encoders ZODIAC AIRCRAFT SYSTEMS

Current Airborne System Architecture Total Capture 1553 Video High Speed Analog Asynchronous Serial Ethernet Parallel/Discrete Time Division Muxed 1553 Video Low Speed Analog Parallel/Discrete Other Data Types Recorder Chapter 10 Recording PCM IRIG Ch 4 Encoder Transmitter Antenna Encryptor • Recorder used for Post mission all data analysis • Encoder primarily used for Real Time TM Downlink, Analog sampling • Duplicate Interfaces for Recorder and Encoder ! ZODIAC AIRCRAFT SYSTEMS

Chapter 10 Asynchronous Packet Downlink Airborne Scenario 1553 Video High Speed Analog Asynchronous Serial Ethernet Parallel/Discrete Recorder PCM or Ethernet Analog Discrete Chapter 10 Recording IRIG 106 Ch 10 packets inserted into a constant rate PCM Ch 4 stream Transmitter Encoders Antenna Encryptor Duplicate interfaces not required ! ZODIAC AIRCRAFT SYSTEMS Quick-look and real-time monitoring

Interface Module Creates Class II PCM stream with IRIG 106 Ch 10 Packets Quick-look and real-time monitoring Traditional Chapter 4 PCM TM downlink UDP Selected Ch 10 packets from any recorder data types UDP data stream (e. g. IP cameras) or other Video sources Constant Bit Rate PCM Stream with self-correcting code (Ch 10 TMDL) Transmitter Antenna ZODIAC AIRCRAFT SYSTEMS

Multiplexing Packets into a Single Fixed Bit Rate PCM Steam Ch 10 Video Packet Ch 10 1553 Packet Ch 2 Fill Packet, Status Information Ch 10 TMDL does not require any programming assignment of data in the Ch 4 PCM stream typically required for Encoders ZODIAC AIRCRAFT SYSTEMS

TM Downlink Format First Header Pointer Frame Sync Word Header Fill Ch 10 Packet Minor Frame (IRIG 106 Standard Class II) ZODIAC AIRCRAFT SYSTEMS Ch 10 Packet Frame Sync Word

Low Latency Data Handling • Low Latency Packet mechanism helps inserting time critical data anywhere into the stream • Latency can be kept below 20 ms for critical data • Typically 100 ms latency for non priority data Low Latency Data F S Pck #N F L S L Pck #N F S Pck #N Transfer packets may overlap transfer frames ZODIAC AIRCRAFT SYSTEMS

Lower Rate TM Downlink Filtering for Specific Data Types Aircraft Data Sources: Ch 10 TMDL PCM Down Link Stream: PCM (complete minor frames) PCM (selected words) MIL-STD-1553 (total bus) MIL-STD-1553 (selected messages) ARINC-429 (All labels) ARINC-429 (selected Labels) Ethernet (All messages) Ethernet (selected messages or data words) HD video (compressed) Video (SD compressed or rate decimated HD) High bandwidth analog Bandwidth limited analog ZODIAC AIRCRAFT SYSTEMS

PCM Filter Word Selection Status display will show the new data rate ZODIAC AIRCRAFT SYSTEMS

Video Bit Rate Decimation Multiple Rate Compression On-Board Video Camera HD High Bit Rate H. 264 Video Ch 10 Recording HD Video Interface On Board High Rate Streaming Frame Rate Decimation and / or HD to SD conversion Packet Ch 10 TMDL Interface ZODIAC AIRCRAFT SYSTEMS Low Rate PCM TM Downlink

Downlink of Filtered 1553 Data All 1553 Message Ch 10 Recording MIL-1553 Interface BC RT Selected 1553 Message Packets Packet Ch 10 TMDL Interface Packet Ch 1 UDP Broadcast of All Bus Data (or Filtered, if selected so) Filtered Ch 1 Selected Messages Fixed Bit Rate PCM ZODIAC AIRCRAFT SYSTEMS

Airborne Processing Channel Concept PCM Stream All Data 1 Recording 2 Matrix Switch Filter 1 2 UDP 1 UDP 2 Destinations ZODIAC AIRCRAFT SYSTEMS Filter 2 3 TM Down 1 TM Down 2

Generic Air and Ground Diagram Network Data (e. g. IP cameras) And other Video sources Quick-look and real-time monitoring: Ch 4 PCM Ch 10 TMDL stream Other Network data processing IRIG 106 Ch 10 UDP broadcast Antenna PCMs from encoders Ch 4 PCM output Direct Video analysis ZODIAC AIRCRAFT SYSTEMS

ZDS Ch 10 TMDL Components ZODIAC AIRCRAFT SYSTEMS

Ch 10 TM Downlink Summary • Totally compatible with TM encryptor, decryptor, transmitters, receivers, bit syncs • Switching cost is low • Ch 10 Telemetry greatly simplify TM downlink process • Minimal testing required to setup mission • Ideal for HD recording and SD Video downlink • Low latency is achievable ZODIAC AIRCRAFT SYSTEMS

Thank you ! ZODIAC AIRCRAFT SYSTEMS