Use of FOS to Improve Airborne Radar Target Detection of other Aircraft Example PDS Presentation for EEE 455 / 457 Preliminary Design Specification Presentation

Aim – Show Preliminary Design using Fast Orthogonal Search Algorithm to Improve Airborne Radar Detection of other Aircraft Target – Approval to continue

Motivation To see how we plan to implement your project To show you the interface level of our design

Outline The ‘Big’ Picture Our Project Existing System Architecture The Requirements The Design Schedule Risks Summary Conclusion Questions

Intercept of Low Flying Target Mode Beam Pattern Pulse Pulsed Radar Range Amplitude A Scope Display Target Ground Return P S D Frequency (GHz) f D Gnd f D Tgt BW Frequency f D Gnd f D Tgt Pulsed Doppler / Coherent Radar Receives The ‘Big Picture’ Soft or Hardware Filter Bank

Intercept of Low Flying Target Mode Beam Pattern Pulse Antenna Power Duplexer Exciter Radar Data Processor Transmitter Receiver Rx Protection PW & PRF Display Beam Steering Control The ‘Big Picture’ and Our Project P S D Frequency (GHz) f D Gnd f D Tgt BW Frequency f D Gnd f D Tgt Pulsed Doppler / Coherent Radar Receives Most Common Implementation Software Filter Bank Fast Fourier Transform In RDP Our Proposed Implementation Software Filter Bank Fast Orthogonal Search Algorithm In RDP Filter Bank

Major Constraint –No Airborne Radar Available To Work On Alternative –Use Army MSTAR Anti Personal / Vehicle Radar to Emulate Airborne Radar –Has the Same Architecture and Pulsed Doppler Processing –Small enough to work on in Lab –We have one for free –Will adequately demonstrate the project principle and Design Antenna Power Duplexer Exciter Radar Data Processor Transmitter Receiver Rx Protection PW & PRF Display Beam Steering Control The ‘Big Picture’ and our Project Most Common Implementation Software Filter Bank Fast Fourier Transform In RDP Our Proposed Implementation Software Filter Bank Fast Orthogonal Search Algorithm In RDP

Antenna Power Duplexer Exciter Radar Data Processor Transmitter Receiver Rx Protection PW & PRF Display Beam Steering Control Requirements Main Functional Requirements 1.Be compatible with a modern software driven Canadian Military radar system 2.Use the same signal interface as the existing radar Performance Requirements 1.Detect lower S/N targets 2.Maintain the same processing time as FFT from detection to display 3.Provide better frequency resolution with the same or fewer samples than the existing FFT Limitations 1.Demonstrate on MSTAR Radar 2.Software tool ABDA to program and run code before putting into radar 3.Lowest Cost Possible (limit $200)

Antenna Power Duplexer Exciter Radar Data Processor Transmitter Receiver Rx Protection PW & PRF Display Beam Steering Control Project Interface Requirements Radar Data Processor FFT Filter bank Heading Pitch Angle Bank Angle Air Speed Pulse Width PRF Range, Velocity, Angle Tracking Amplitude Frequency 1553 databus msg to display Altitude Covariance Matrix G FOS Filter bank Heading Pitch Angle Bank Angle Air Speed Pulse Width PRF Altitude Amplitude Frequency Interfaces Inputs and Outputs Data Stream Analog to Digital Converter Avionics FCS Receiver Transmitter

Design Process Spiral Approach (Supervisor guided trial & error) –Believe we will need 3 iterations –Suggested by supervisor as we have no experiece –“Explain Why” (What will be done in each iteration) 1. Read the data stream digital parameters and make a FOS work 2. Det FOS and data parameters to meet min requirements 3. Make FOS meet all requirements

ENG Project Project Time Line EVENTS Major work items Critical Path No Go Events and Dates Hell Week Receive Hardware Dates Money Deadlines Radar Data Processor FOS Filter bank Heading Pitch Angle Bank Angle Velocity Pulse Width PRF Range & Angle Tracker Amplitude Frequency 1553 databus msg to display Altitude Parsing Covariance Matrix G

Risk Assessment Risks –Interface Issues Underestimated complexity Do you have to learn the interfaces without documentation –Schedule Issues Too Aggressive? –Equipment Issues Do we own the equipment Is there a reason it could arrive too late –Software Tools Do you have to learn a new software tool? –Design Approach Issues Mitigations –Assess each and have options and plans to deal with each

Example Summary –Problem – Improve Radar Target Detection With FOS –Use a small land radar with same processing to emulate the airborne radar –Implement a FOS algorithm instead of an FFT –Main Requirement is “Replacement Fit” with lower SNR detection and faster performance –Spiral Design Approach –Schedule –Risk Assessment

The Conclusion Problem –Improve Radar Detection With FOS Have a Plan and Design –Know the interfaces Seeking Approval to Continue

Questions