Radar Method and Radar System

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a radar method and system where at least two spatially separated transceiver units exchange and process radar signals, performing phase correction for each sample to significantly reduce phase noise and signal non-linearities. The method mathematically calculates and corrects phase differences between signals received by multiple radar units, enabling highly accurate detection and measurement of object position, distance, velocity, and angle—even in complex multi-path environments or with distributed antennas. This technique works with standard radar signals (e.g., FMCW/LFM) and does not require prior target selection or high-end synchronized oscillators.

Use CasesContent extracted from patent full text and abstract with AI.

• Precise indoor or outdoor localization and distance measurement between distributed radio/radar units (e.g., robotics, asset tracking).
• Object and environment detection for smart vehicles, automotive safety systems, and traffic monitoring (advanced driver-assistance systems, ADAS).
• Airspace monitoring and surveillance (e.g., air traffic control, drone detection).
• Earth observation and remote sensing using distributed radar systems on satellites or airplanes (e.g., interferometric SAR, bistatic/multistatic radar).
• Industrial and infrastructure monitoring (e.g., structural movement, security, perimeter surveillance).
• Improved orientation and mapping in applications requiring high-precision angle and velocity measurement (e.g., autonomous navigation, robotics).

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly reduces phase noise and non-linearities in distributed radar systems, improving signal quality and dynamic range.
• Enables highly accurate measurements of distance, velocity, displacement, and angle, even in multipath or multi-object scenarios.
• Functions with standard hardware (no need for costly high-stability oscillators or dedicated synchronization links).
• Works independently of object distribution or channel responses, making it robust and versatile.
• Improves the performance and flexibility of multi-channel and MIMO radar systems.
• Simplifies system design by lowering requirements on signal generation and synchronization hardware.
• Enhances resolution and reliability in radar imaging applications such as SAR.

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Patent Abstract

The invention relates to a radar method, in particular a primary radar method, in which at least one first and at least one second transceiver unit (S1, S2) that are spatially separated from one another in particular transmit and receive signals simultaneously or in a chronologically overlapping manner, wherein a respective comparison signal, in particular a mixed signal S1 k,mix(t) or S2 k,mix(t), is formed from a signal received and transmitted by each transceiver unit, and a phase correction is carried out for each sample value of a plurality of sample values, preferably a phase correction value is formed from the comparison signals S1 k,mix(t) or S2 k,mix(t) for each sample value of a plurality of sample values, in particular in such a manner that a measurement is made of a phase difference between the at least two signals S1 k,mix(t) and S2 k,mix(t) per sample value, preferably using a mathematical operation.