Signal and Data Processing Rack

This case study showcases Mistral’s expertise

in the architecture and design of a custom

hybrid system that supports two industry standard

bus architectures VME and VPX.

The Customer

The Requirement

Solution Provided

A leading Defense Lab selected Mistral to design, build and integrate a system

capable of functioning as a Signal and Data Processing (SDP) Rack.

The customer’s requirement was to design and integrate a solution that met

their overall functional/performance criteria and adhered to longevity, product

life cycle management and integration norms.

Mistral is a professional design services company with extensive experience

in embedded hardware and software development for Mil-Aero applications.

This capability, in conjunction with partnerships with leading embedded

solution providers like Curtiss Wright Controls Defense Solutions and Wind

River Systems, enabled Mistral to provide a complete solution to meet the

customer expectations.

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Mechanical design of the SDP Rack with structural and thermal analysis

The rack had to be housed in a sheltered space on a wheeled vehicle

The rack had to be mounted on shock mounts in an air conditioned shelter

and an AC vent had to be provisioned on top of the SDP rack to allow

circulation of conditioned air to the rack for cooling purposes

The rack had to be designed in compliance with JSS 55555 and MIL - STD

461 E and would be subjected to environmental and EMI/EMC tests, at

the customer premises

Design and Fabrication of the hybrid backplane (VPX and VME)

Generation of Wiring Charts, Inter Connection Document (ICD) and

providing cable harnesses as per the ICD

The rack had to be equipped with:

Quad Power PC and Intel based processing system

Quad channel sFPDP module mounted on VPX board capable of

communication using sFPDP protocol

VPX based Gigabit Ethernet Switch

Provision for Redundant Power Supply

Power Supplies for the entire rack. Circuit breakers and protection

circuitry to be provided to prevent damage to the electronics housed

in the rack

The rack had to be mounted with LEDs, to indicate the health of the

power supplies and the fans.

Introduction

The Signal and Data Processing (SDP) Rack is one of the sub-systems in the

radar network which provides resources for radar signal processing, data

capturing and data recording with other radar control functions.

This Case Study highlights Mistral’s expertise in the architecture and

design of a custom hybrid system that supports two industry standard bus

architectures VME and VPX, to meet the requirements of input /output

signals, communication links, processing capability and data transfer

capability.

Case Study

Signal and Data Processing Rack

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Integration and testing of COTS and custom designed hardware

Integration of drivers, BSP and DSP libraries

Verification and Validation

Design and validation of the rack for a high-power application, with

thermal management.

Rugged systems adherence to ground based application - All boards

supplied cater to the requirements of JSS 55555 and .

Design and fabrication of 14-slot hybrid backplane comprising of VPX and

VME bus architecture

VPX backplane had to incorporate half mesh fabric connection while

maintaining high level of signal integrity

Conformance to environmental conditions including thermal management,

structural rigidity, EMI/EMC conformance.

Complete integration of the COTS that used two industry standard bus

architectures VPX and VME. The system was realized with two different

operating platforms (Linux and VxWorks)

Power ON sequencing, temperature monitoring and control inside the SDP

Rack

Establishing optical links for sFPDP, Fiber Channel and Gigabit Ethernet for

external and internal network

The integrated SDP rack was qualified i.e. EMI / EMC tests and

environmental tests carried out as an integrated system instead of

qualifying the individual sub-systems. System designed adhered to the

requirements of JSS 55555 and Specifications.

A multi-vendor selection of best-of-breed sub-systems was made available

as an integrated system through a single system integrator; who not only

provided the solution but would also provide support and maintenance for

the coming years

Shortened customer’s end-to-end product development cycle and ensured

on-time deployment schedule

A fully integrated deployable solution, compliant with functional and

environmental standards was made available.

MIL - STD 461 E

MIL - STD 461 E

The Challenges

Key Achievements

Customer Benefits

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