Infrared and Laser Engineering, Volume. 51, Issue 7, 20210572(2022)
Simulation system of a laser heterodyne interference signal for space gravitational wave detection
Fig. 1. Schematic diagram of principle of space gravitational wave detection laser heterodyne interference
Fig. 3. (a) Schematic diagram of the basic principles of the DDS; (b) DDS block diagram with parametric modulation function; (c) The output waveform of PR; (d) The output waveform of ROM; (e) The output waveform of DAC; (f) The output waveform of filter
Fig. 4. Design scheme of the simulation system of space laser heterodyne interference signal
Fig. 5. (a) FPGA and crystal oscillator unit; (b) DAC unit; (c) DAC back-end analog amplifier circuit
Fig. 6. Comparison diagram of the theory and simulation results of Doppler frequency shift function
Fig. 7. (a) Spectrum diagram of the main signal; (b) Spectrum diagram of the main signal coupled with shot noise
Fig. 8. Schematic diagram of harmonic clutter suppression in the frequency range of 2-20 MHz
Fig. 9. (a) Waveform diagram of the main carrier beat coupled with the two time side-beat; (b) Frequency domain diagram of the main carrier-beat coupled with two time side-beat; (c) Main signal spectrum diagram of heterodyne interference signal; (d) Spectrum diagram of the principal signal coupled with 75 dB shot noise
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Shuang Han, Junze Tong, Zhenpeng Wang, Tao Yu, Yanlin Sui. Simulation system of a laser heterodyne interference signal for space gravitational wave detection[J]. Infrared and Laser Engineering, 2022, 51(7): 20210572
Category: Lasers & Laser optics
Received: Aug. 16, 2021
Accepted: --
Published Online: Dec. 20, 2022
The Author Email: Tao Yu (yut@ciomp.ac.cn)