Reconfigurable radar signal generator based on phase-quantized photonic digital-to-analog conversion.
Opt Lett
; 47(10): 2470-2473, 2022 May 15.
Article
en En
| MEDLINE
| ID: mdl-35561378
ABSTRACT
A novel, to the best of our knowledge, scheme for reconfigurable radar signal generation is proposed based on the principle of photonic phase-quantized digital-to-analog conversion. Multi-level digital phase modulation with different modulation depths is combined to convert multi-channel digital data to the phase of an optical carrier. Frequency-modulated or phase-modulated radar signals are generated by beating the phase-synthesized optical carrier with a coherent reference light. The proposed radar signal generator features a simple structure, highly reconfigurable modulation format, and flexibly tunable frequency. A 3-bit photonic phase-quantized digital-to-analog converter with a 10-GSa/s sampling rate is constructed experimentally. The generation of linear frequency-modulated, nonlinear frequency-modulated, frequency-stepped, frequency-hopping, binary phase-coded, and polyphase-coded waveforms is demonstrated.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2022
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Article