jeremy twaits · solutions marketing manager ... sil hil istf oar risk reduction technical cost...
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ni.com/aerospace-defense
Jeremy TwaitsSolutions Marketing ManagerNational Instruments
System-Level Verification of Modern EW and Radar
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Agenda
Testing Needs for Radar and EW Systems
Types of Test and Engineering Challenges
Software-Defined Systems
Technology Challenges
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Radar and EW Systems - Overview
LandNaval
Avionic
Type of Applications Installed on the Platforms
Radar
• Radar
• Seeker
EW/SIGINT
• Electronic Support
• Electronic Protection
• Electronic Attack
Communications
• Radio
• Datalink
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Testing Needs for Radar/EW Systems
Radar
Emulator
• ELINT Receiver (ES)
• Radar Warning Receiver (ES)
• Jammer (EA)
• RF Active Decoy (EP)
Targets, Environment
and
Jammers Simulator
• Radar Performances
• Radar Protection (EP)
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Type of Testing and Test Resources
System/Sub-System Level Validation supports:
system design, development/integration and,
customer acceptance and operationsConcept of
Operations
System
Specification
High-Level
Design
Detailed
Design
System
Testing
Acceptance
Testing
Software/Hardware Development
Validating the System
Verifying the System
Verifying the Subsystems
Verifying the
Units/Devices
>> Implementation >>
MRO
Sub-systems/Units
Testing
Devices
Testing
System Integration
Lab
Hardware-In-the-
Loop
Installed System
Test FacilitiesOpen Air Ranges
Conductive Radiative
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Test Resources versus Engineering Challenges
System Integration
Lab
Hardware-In-the-
Loop
Installed System
Test FacilitiesOpen Air Ranges
Conductive Radiative
•Concurrent Engineering is a key approach for discovering
failures in early stage of the system life cycle and it
requires the simulation of the sub-systems for HIL testing.
•OAR requires complex and expensive simulation facilities
for customer acceptance procedure and operations. That
requires different conductive/radiative approach to ISTF.
•Standards and regulations require a different approach for
seamless integration of 3rd party IP for lowering risk and
cost, and reducing disruption of emerging requirements
integration.
.
Costs
SIL HIL ISTF OAR
Risk Reduction
Technical
Cost & Logistics Risk Reduction
Technical
Cost & Logistics
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Capture Stimulus
Generate
Response
Apply
Environment
Integrate into
Existing Test
Infrastructure
Software-Defined Systems Approach
Radar Target Generation
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Cloud
Local
RAID
CPU CPU
FPGA DSP
Data Bus Data Bus
Tx
Tx
Rx
Rx
A platform of modular hardware and flexible software solves all aspects of system design
ADC
ADC
DAC
DAC
REAL-TIME SIGNAL PROCESSING
AND DETECTION
Target Generation
Jamming / Interference
Clutter / Multipath / Atmosphere
Signal Identification and Decoding
FLEXIBLE & MODULAR I/O
RF, uWave and mmWave
Wideband ADC/DAC
Phase coherence across Tx & Rx
Phase coherence across multiple
channels
SYSTEM COMMUNICATIONS
Pulse Description Words
Waveform Description Words
Result Recording
Software-Defined Systems Approach
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Typical Parameters for Real-time Target Generation
Velocity and
Trajectory
Range
𝐷𝑜𝑝𝑝𝑙𝑒𝑟 𝑆ℎ𝑖𝑓𝑡 =2∆𝑣
𝑐𝑓𝑜
𝑆𝑖𝑔𝑛𝑎𝑙 𝐷𝑒𝑙𝑎𝑦 = 2 ∗𝑅𝑎𝑛𝑔𝑒
𝑐
RCS
Polarization
# Targets
Channel Noise
Operating Frequency
Bandwidth
PRF
Beam Azimuth and Shape
Antenna and Scan Pattern
Clutter
An ideal target generator is fully decoupled from the radar
under test.
In reality, certain parameters (fc, BW, Directionality, etc.)
are required.
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Simple Example for Radar Target Generation
Low-latency streaming with MGTs
ADCRFIN
0°
90°
ADC
DAC
0°
90°
DAC
RFOUT
LabVIEW Programmable FPGA
PXI-5840 1 GHz BW Vector Signal Transceiver
Target Range
Doppler Shift
Clutter
Noise
Gain
Radar
Under
Test
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Engineering Challenges Associated to the Technology
• AESA, which enables Multi-Functional RF
Systems (Radar, EW, Comm), requires phase
aligned multi-channel RX/TX test systems
• LPI broadband spread spectrum techniques
and agile radars require wideband signal
analysis and generation
• Cognitive Radar/EW and Artificial Intelligence
techniques require real-time signal processing
Surface Radar and EW Systems
Airborne Radar and
EW Systems
Spaceborne Radar and
Comm/Nav Systems
*Pictures from web sources
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Phase Coherent RF Measurements with PXI
Simplify Reference Clock and Trigger Distribution
Share Common Local Oscillator for Phase Alignment
8X8 MIMO System
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Spectrum Stitching
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Conclusion
Target Generators and Radar Emulators are needed for testing Radar and EW
respectively
Hardware-in-the-loop approaches / Simulation approaches help to find
problems earlier and at lower cost
Emerging technologies drive the need for real-time signal processing, plus
wider bandwidths without losing fidelity
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Any Questions?
Please visit us at Stand B3 for a live demonstration