Radar Signal Estimation Circuit for Path Delay and Phase Noise

The patent applies preliminary action by estimating path delay and phase noise before they significantly degrade signal integrity. The estimation circuit proactively calculates these parameters using the received signal and reference signal, enabling early compensation measures to be taken, thus preventing severe signal degradation before it occurs.

The patent implements feedback by using the estimated path delay and phase noise to adjust and compensate the received signal. The estimation circuit continuously monitors signal characteristics and feeds back correction information to improve signal integrity, creating a closed-loop system that actively counteracts the harmful effects of path delay and phase noise.

The patent applies universality by designing an estimation circuit that performs multiple functions: it estimates both path delay and phase noise using the same basic circuit architecture. The circuit processes the received signal and reference signal to extract multiple parameters, reducing the need for separate dedicated circuits for each estimation task, thus improving signal integrity while limiting complexity growth.

The patent implements self-service by enabling the estimation circuit to use the received signal itself as the reference for estimation. The circuit leverages the existing signal structure and embedded reference information to perform self-diagnosis and self-correction, eliminating the need for additional external reference signals or complex calibration equipment, thereby improving reliability without proportionally increasing device complexity.