An Implementation of Chapter 7 Packet Telemetry System
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1 An Implementation of Chapter 7 Packet Telemetry System 19th Test Instrumentation Workshop: Tools, Training and Intellectual Capital Workshop ITEA Johnny Pappas Chief Technical Officer and Executive VP Zodiac Data Systems
2 Typical Airborne System Architecture Total Capture 1553 Video High Speed Analog Asynchronous Serial Ethernet Parallel/Discrete Recorder } Recorder Chapter 10 Recording Time Division Muxed } 1553 Video Low Speed Analog Parallel/Discrete Other Data Types Encoder PCM IRIG Ch4 Transmitter Encryptor Antenna
3 How do you want to send your Telemetry Data? Continuous or Periodic Data- PCM Time Division Multiplexing is optimal Asynchronous Data- Asynchronous Packet transmission is optimal Due to major increase in high speed Asynchronous Busses on test platforms and reduced PCM Telemetry Bandwidth. This is an extremely important aspect to consider.
4 All MDR Data Types Zodiac Data System Chapter 7 Hardware Implementation Traditional Chapter 4 PCM TM downlink Selected C10 Packets internal from the MDR UDP Quick-look and real-time monitoring Chapter 7 Chapter 4 Class II PCM Strream Any other UDP data stream Hot MIC Audio Transmitter Antenna
5 Typical Chapter 7 Downlink Airborne Scenario Asynchronous Data 1553 Video High Speed Analog Asynchronous Serial Ethernet Parallel/Discrete Recorder Chapter 10 Recording IRIG106 Ch10 UDP broadcast Quick-look and real-time monitoring PCM or Ethernet Chapter 7 PCM Stream Analog Data Discrete Encoders Encryptor Transmitter Antenna
6 Simplified Example of Packets in Chapter 7 PCM Stream Fill Fill VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 Fill Fill 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 Fill VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 Fill PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 Fill VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 Fill VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 Fill PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 Fill Fill Fill Fill Fill Fill Fill Fill 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 1553IN Chan1 Fill Fill Fill Fill PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 Fill VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 Fill VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 Fill PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 PCMIN Chan1 Fill VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 VIDIN Chan1 Fill VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2 VIDIN Chan2
7 Ground Scenario Receiver and bit synchronizer Chapter 7 PCM Ground Recorder Chapter 7 Native Signal Reconstruction UDP Live Streaming Ethernet C10.Publish Native Signal Reconstruction HD Video Hot MIC Audio Ethernet PCM Or Small Blue Modules
8 Simplified End to End System Chapter 7 Encoder and C10 Recorder Encoder PCM inserted Ch4 PCM and Ch10 UDP merged together Antenna Encoder PCM output IRIG106 Ch10 UDP broadcast Reproduce Native Signals -Video -PCM -Enet Decom
9 What is the Future Objective for Chapter 7 PCM- Objective All of the DECOM Front Ends to handle Chapter 7 exactly like any other Chapter 4 Class I or II PCM Stream No Switching CO$T Telemetry and Ground Operations exactly identical for Chapter 4 and Chapter 7 Telemetry
10 How Does C7 TM Work Determine Maximum bandwidth available for telemetry downlink Determine the channels you want to downlink Determine if you want to transmit all data for that channel or transmit data at a lower rate (I.E Filtering) For lower rate packet downlink, determine the lower rate amount of data to be down linked NOTE: PACKET DOWNLINK DOES NOT REQUIRE ANY PROGRAMMING ASSIGNMENT OF DATA IN THE PCM STREAM TYPICALLY REQUIRED FOR ENCODERS. THE PACKET PLACEMENT IN THE PCM STREAM FLOATS IN THE STREAM. PACKETS ARE STUFFED FIFO INTO THE PCM STREAM.
11 Filtering- PCM Minor Frame Time = X Seconds - Filtering based on Minor Frame s - Minor Frame Rate is unchanged - Example of approximate 25% reduction in Bit rate
12 Filtering Video On-Board Video Camera Video Module Full Bit Rate Compression High Bit Rate H.264 Video Ch10 Recording C7 Module SD Video Downconvert Or I Frame Only C7 PCM
13 Lower Rate 1553 Channel TM Downlink MIL-1553 Module (MUUUU) Total Bus Ch10 Recording BC RT Selected 1553 Message Packets Selected Messages C7 PCM Filtered Ch 1 Filtered Ch 2
14 Summary- Filtering Data Type Video (MVCR1, MVCR3 and MVCR5) MIL-STD 1553 (hybrid modules) Analog, Discrete Asynchronous Serial Ethernet (METH2A and hybrid modules) PCM (hybrid modules) ARINC 429 Description of Filtering/Sub Sampling The video channel is sent to two independent encoders. One is operating at a high rate for the on board recording. The other encoder is compressing the data at the desired date rate suitable for the TM downlink. HD to SD downscaling is available in some resolutions. All or filtered messages are recorded on board. For TM Down-Link Messages from specific busses are selected, based on RT, SA, WC, Transmit or Receive. No filter available yet. Full traffic is recorded. User definable filter algorithms for TM downlink could be implemented in the future. Full traffic is recorded. User definable filter algorithms for TM downlink available based on source or destination IP addresses or on IENA key. Full rate recording. User definable filter algorithms for TM downlink available based on selected words from the Minor Frame s. Full message recording. Label filtering for TM downlink could be implemented in the future.
15 Implementation of Data Management System Number of Output Streams and Destinations from a single signal has increased Recorded Streams UDP Live Streaming (.publish) Chapter 7 Filtered Streams
16 Physical Input and Data Channel Concept Physical Input FPGA Matrix Switch Data Channel 1 Data Channel 2 Data Channel 3 Select Messages Filtered Data Recording 1 Recording 2 UDP 1 UDP 2 TM Down 1 TM Down 2 Destinations
17 Virtual Channel Example Physical Stream Video PCM Enet All Data 1 Matrix Switch Filtered 2 Recording 1 Recording 2 UDP 1 UDP 2 TM Down 1 TM Down 2 Destinations
18 Advanced Features- Playback Previous Recorded Data while Recording Real-Time Data UDP streaming of Live data (RT recording data) 1553 Video High Speed Analog Async Serial Ethernet Parallel/Discrete Recorder Simultaneous Live and Playback Data Chapter 7 PCM Live and Previously recorded data.
19 Advanced Features USING C10.Dot Commands.Setup- (fully tested configurations) Switching of Sources Recorded In Real-time Select Data Channels for Broadcasting (.publish) Select Data Streams Sent to C7 PCM TM Link Select Video Streams Downlinked
20
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