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ATLAS is the first Portuguese radar system that aims to detect space debris.The article introduces the system and provides a brief description of itscapabilities. The system is capable of synthesizing arbitrary amplitudemodulated pulse shapes with a resolution of 10 ns. Given that degree of freedomwe decided to test an amplitude modulated chirp signal developed by us and anested barker code. These waveforms are explained as well as their advantagesand drawbacks for space debris detection. An experimental setup was developedto test the system receiver and waveforms are processed by digital matchedfiltering. The experiments test the system using different waveform shapes andnoise levels. Experimental results are in agreement with simulation and showthat the chirp signal is more resilient to Doppler shifts, has higher rangeresolution and lower peak-to-sidelobe ratio in comparison with the nestedbarker code. Future work in order to increase detection capabilities isdiscussed at the end.

Design of pulsed waveforms for space debris detection with ATLAS