Low-Cost Radar Jonathan Hoole University of Stellenbosch Prof. K.D. Palmer

Slide 2 © CSIR Overview Aim Basics of FM-CW Radar Simulations – Multiple Targets Proof of Concept Results – System 1 Results – System 2 Conclusion

Slide 3 © CSIR Aim Reduce Cost of Radar Linear FM-CW [1,2] DDS Multi-purpose [3] [1] Skolnik, M.I.: Introduction to RADAR systems. 3rd edn. Mc Graw-hill, [2] Stove, A.: Linear FMCW Radar Techniques. IEE Proceedings, [3] Ellerbruch, D.A. Belsher, D.R.: Electromagnetic Technique of Measuring Coal Layer Thickness. IEEE Transactions on Goescience Electronics, 1978.

Slide 4 © CSIR FM-CW Theory Advantages Good RF bandwidth Low Sampling Rate Easy to Implement (DDS) Data Easily Processed Peak v Ave. Power Disadvantages Sensitive to LO noise Antenna Coupling DDSADC LORF IF cos(R)cos(T) = cos(R+T) + cos(R-T)

Slide 5 © CSIR Simulation Results

Slide 6 © CSIR Simulation Results

Slide 7 © CSIR Proof of Concept

Slide 8 © CSIR Proof of Concept Results

Slide 9 © CSIR Ground Penetrating Radar

Slide 10 © CSIR Ground Penetrating Radar Results

Slide 11 © CSIR C-Band

Slide 12 © CSIR C-Band Results – Biggest target at 10m, 20m and 30m

Slide 13 © CSIR C-Band Results – Targets at 10m

Slide 14 © CSIR C-Band Results – Targets at 20m

Slide 15 © CSIR C-Band Results – Targets at 30m

Slide 16 © CSIR Conclusion Cheap FM-CW Radar using DDS Successful Two systems shown to work R Possible improvements PCB layout with FPGA LO

Slide 17 © CSIR Thank you for your attention! Any Questions?