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Communication:

With the increasing demand for high-speed wireless communication, millimeter-wave (mmWave) communication has emerged as a promising solution. However, mmWave channels are highly susceptible to blockages, leading to severe signal attenuation and degradation in communication quality. To address this issue, beamforming techniques have been widely used in mmWave communication systems to improve the signal-to-noise ratio (SNR) and enhance the communication performance.

Radar:

Radar systems play a critical role in numerous applications, such as surveillance, navigation, and target detection. To achieve high-resolution imaging and accurate target recognition, synthetic aperture radar (SAR) has been extensively studied in recent years. SAR can reconstruct high-resolution images of the target scene by utilizing the phase history of the received signals. However, SAR imaging is susceptible to motion errors, which can degrade the image quality and reduce the target detection performance.

Optics:

Optical communication has become a prevalent technology in modern communication systems, owing to its high speed and reliability. However, the performance of optical communication systems is limited by various factors, such as fiber dispersion and nonlinear effects. To overcome these limitations, various techniques have been proposed, including multi-mode fiber (MMF) transmission, optical signal processing, and nonlinear mitigation. These techniques can effectively improve the signal quality and enhance the transmission capacity of optical communication systems.