Radar Digital Beamforming Single-Pass Processing
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Solution Overview
Problem
Current radar signal processing methods, particularly digital beamforming, require two passes through a signal processing unit, leading to inefficiencies due to time-consuming procedures and sub-optimal performance.
Innovation Solution
The method involves digitally beamforming radar signals using antenna and beam-specific complex multiplication factors, allowing for post-FFT beam steering, which enables parallel processing and reduces memory requirements, thereby improving processing speed and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two passes through signal processing unit are used for beamforming, then beam steering and amplification can be performed, but processing time increases and efficiency decreases
Solution Approach 1:
The patent combines beam steering and amplification operations into a single pass through the signal processing unit. By integrating these two previously separate operations, the system achieves the same beamforming result while reducing processing time and improving efficiency.
Solution Approach 2:
The patent performs preliminary calculations of beamforming weights and combines them with signal processing in advance. This allows the system to prepare processing parameters beforehand, enabling single-pass execution without sacrificing beamforming accuracy.
2Reliability
If traditional beamforming method is used, then signal processing can be performed, but memory requirements increase
Solution Approach 1:
The patent extracts and eliminates redundant memory storage requirements by implementing a streamlined beamforming approach that processes signals with reduced memory footprint while maintaining processing reliability through optimized algorithms.
Data Source
AI summary
A method for a radar system having a plurality of antennas is provided. The method includes processing a plurality of radar signals for determining a distance between the radar system and at least one target and a velocity of the at least one target, thereby forming a plurality of processed radar signals. Each radar signal of the plurality of radar signals is received by an associated antenna of the plurality of antennas. The plurality of processed radar signals are digitally beamformed for at least one beam direction, thereby forming a plurality of beamformed radar signals. The plurality of beamformed radar signals are summed from the plurality of antennas per beam direction.