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Three-frequency nonlinear heterodyne detection. 2: digital communications and pulsed radar
Applied Optics
|February 6, 2010
Summary
This study explores three-frequency nonlinear heterodyne detection for pulsed radar and digital communications. The technique offers advantages similar to its continuous-wave (cw) analog counterpart, especially in turbulent channels.
Area of Science:
- Optics and Photonics
- Electrical Engineering
- Communications Systems
Background:
- Previous work explored continuous-wave (cw) radar and analog communications using three-frequency nonlinear heterodyne detection.
- This study extends the evaluation to pulsed radar and digital communication systems.
Purpose of the Study:
- To assess the efficacy of three-frequency nonlinear heterodyne detection in pulsed radar and digital communication.
- To analyze system performance under various channel conditions, including atmospheric turbulence.
Main Methods:
- Evaluation of three-frequency nonlinear heterodyne detection for pulsed radar and digital communications.
- Consideration of both vacuum and lognormal turbulent atmospheric channels.
- Generation of computer-simulated error probability curves.
Main Results:
- The technique demonstrates advantages in pulsed/digital systems comparable to those in cw/analog systems.
- Performance was analyzed for various binary receiver configurations and atmospheric turbulence levels.
- Superior performance over conventional heterodyne systems was observed when Doppler information is limited.
Conclusions:
- Three-frequency nonlinear heterodyne detection is a viable technique for pulsed radar and digital communications.
- The method maintains its advantages across different channel conditions and signaling schemes.
- This technique offers a robust alternative, particularly in scenarios with poor Doppler information.
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