Payload Support Unit (PLSU) –
Advanced Payload Data Processing &
Encryption
The Payload Support Unit (PLSU) by Azista USA is a high-performance electronic system designed to manage, process, and secure payload data for next-generation small satellites. It receives, stores, compresses, and encrypts payload data while also handling thermal control and focus mechanism operations. Equipped with a CCSDS engine and advanced FPGA-based processing, the PLSU is an essential component for high-speed data-intensive space applications.
Key Features & Benefits
High-Speed Data Input – Supports up to 10Gbit/s raw data input with FPGA-based user-defined interfaces (LVDS, Camera Link, GigE, USB)
Advanced Data Processing – Performs radiometric & geometric image correction, dTDI (image stacking), and real-time video compression (H.265, JPEG-LS, PNG, FELICS)
Secure Data Storage – 1TB onboard storage with 850 MB/s write speed
Robust Encryption – 128-bit AES-GCM encryption, Diffie-Hellman RSA key (3072-bit), and longer key options available
CCSDS-Compliant – Meets CCSDS 133.1-B-2, 355.0-B-1, 732.0-B-3, and 131.0-B-3 standards
Thermal & Focus Control – Integrated payload heating and focus mechanism operation (FOCM)
Radiation-Tolerant Design – 30 kRad hardness (DPU), 20 kRad (Heat & FOCM) ensures mission reliability
PLSU Technical Specifications
Versatile Power Conditioning – Supplies regulated DC voltages (1.8V to 40V), overcurrent protection, and payload time synchronization
Reliable Data Handling – RS422 & LVDS interfaces, payload telemetry collection, and fault protection against latch-ups
High Modularity – Easily adaptable to new payloads while keeping the satellite bus unchanged
Flight-Proven Design – Space heritage validated for LEO missions with a 5-year design life
PPDH-110 Configurations
| Characteristics | Description |
|---|---|
| Input Voltage | Up to 10Gbit/s raw data input (User-defined interfaces via FPGA: LVDS, Camera Link, GigE, USB) |
| Processing | User-defined processing (FPGA), Radiometric & geometric image correction, dTDI (image stacking), JPEG-LS, PNG, FELICS compression, H.265 video compression |
| Storage | 1TB onboard, 850 MB/s write speed |
| Encryption | 128-bit AES-GCM, Diffie-Hellman RSA 3072-bit key, extended key lengths available |
| CCSDS Compliance | CCSDS 133.1-B-2, 355.0-B-1, 732.0-B-3, 131.0-B-3 |
| Output | Up to 10Gbit/s raw data, User-defined FPGA interfaces (LVDS, GigE, USB) |
| Dimensions (mm³) | 53.0 × 139.8 × 194.6 |
| Mass | 985 ± 30 g |
| Nominal Voltage | 3.3V (DPU), 23.1V (Heat & FOCM) |
| Power Consumption | <8W (Average, dependent on heater & DPU usage) 30 kRad (DPU), 20 kRad (Heat & FOCM) |
| Radiation Hardness | 30 kRad (DPU), 20 kRad (Heat & FOCM) |
| Operating Temp | -20°C to +40°C |
| Design Life (LEO) | 5 years |
Optimized for Data-Intensive Space Missions
The PLSU is the ideal solution for satellite integrators, remote sensing missions, and defense applications, ensuring secure, high-speed, and reliable data processing in harsh space environments.
