Radar Device Phase Synchronization Circuit

The patent segments the phase synchronization process into three distinct circuit stages: pre-processing circuit for initial phase alignment, phase compensation circuit for fine-tuning phase differences, and post-processing circuit for final coherence optimization. This segmentation allows each circuit to specialize in specific aspects of phase synchronization, improving overall coherence quality while maintaining manageable system complexity through modular design.

The pre-processing circuit performs preliminary phase alignment before signals enter the main phase compensation circuit. By pre-aligning phases and removing obvious phase errors in advance, the system reduces the computational burden on subsequent circuits and achieves better initial coherence conditions, which improves final measurement precision without proportionally increasing overall system complexity.

The patent divides comprehensive phase compensation into three sequential circuit stages, each handling specific compensation tasks. The pre-processing circuit handles coarse phase alignment, the phase compensation circuit handles fine-tuning with phase compensation tables, and the post-processing circuit handles final optimization. This segmentation allows parallel processing of different compensation aspects, improving computational efficiency while maintaining comprehensive coherence improvement.

The system implements selective phase compensation by identifying and processing only the significant phase error components at each stage. The pre-processing circuit removes large phase errors, the phase compensation circuit addresses residual errors using lookup tables, and post-processing handles minor adjustments. This partial action approach achieves sufficient coherence improvement without performing unnecessary comprehensive processing on all signal aspects, thus maintaining computational speed.

The patent implements three specialized phase compensation circuits with distinct functions: pre-processing circuit for initial alignment, phase compensation circuit for fine-tuning using phase compensation tables, and post-processing circuit for final optimization. Each circuit is designed to handle specific aspects of phase synchronization, which improves overall accuracy while keeping individual circuit designs relatively simple and modular.

The phase compensation circuit uses pre-stored phase compensation tables that can be applied to multiple different phase error scenarios. This universal approach allows a single circuit design to handle various synchronization requirements without requiring custom-circuit designs for each case, thereby improving phase synchronization accuracy across different operating conditions while controlling overall device complexity through reusable components.