Radar Front End Chip Compression Circuitry
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Solution Overview
Problem
The increasing bandwidth requirements for radar data transmission between radar sensors and central radar processors in automotive applications pose challenges due to high costs of high-bandwidth interfaces and limited embedded memory resources in radar front end chips.
Innovation Solution
The implementation of a radar front end chip with compression and encoding circuitry, including phase coding and block-based compression, to reduce the size of the radar data stream and thereby decrease the bandwidth needed for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar sensors transmit high-resolution data to central radar processor, then measurement precision is improved, but bandwidth requirement increases
Solution Approach 1:
The patent extracts and removes redundant information from radar data streams before transmission. By identifying and eliminating duplicate or unnecessary data elements at the sensor level, the system maintains full measurement precision while reducing the quantity of data that needs to be transmitted to the central processor.
Solution Approach 2:
The patent performs preliminary compression and filtering of radar data at the sensor level before transmission. By pre-processing the data to remove redundancies and encode essential information efficiently, the system reduces bandwidth requirements while preserving the precision needed for accurate radar measurements.
2Speed
If high-bandwidth interface is used for radar data transmission, then data communication speed is improved, but cost increases
Solution Approach 1:
The patent extracts only the essential radar data elements needed for processing, removing redundant information before transmission. This allows the use of lower-cost, lower-bandwidth interfaces while maintaining adequate data transmission rates for effective radar operation.
Solution Approach 2:
The patent changes the data representation parameters through compression algorithms and efficient encoding schemes. By transforming the data into a more compact form, the system achieves adequate transmission rates over cost-effective interfaces without sacrificing the essential information content.
3Adaptability or versatility
If more radar sensors are deployed, then detection coverage is improved, but embedded memory resources are exceeded
Solution Approach 1:
The patent extracts and transmits only the most critical radar data elements to the central processor, leaving less essential data processed locally or discarded. This enables the deployment of multiple radar sensors to improve detection coverage while keeping the embedded memory requirements within acceptable limits.
Solution Approach 2:
The patent implements partial processing of radar data at the sensor level, performing essential functions locally while transmitting only necessary results to the central processor. This selective approach allows multiple sensors to be deployed for improved coverage without requiring excessive embedded memory capacity in each sensor node.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively reduces the data communication bandwidth between radar sensors and central radar processors, improving the efficiency of the radar system while minimizing costs and computational intensity.
Implementation Method 1
each encoder of the plurality of encoders to receive a digitized radar signal and to encode the digitized radar signal with a phase code to generate one of a plurality of phase-coded digitized radar signals
Data Source
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AI summary
The present disclosure provides a radar front end chip that includes a plurality of encoders, each encoder of the plurality of encoders to receive a digitized radar signal and to encode the digitized radar signal with a phase code to generate one of a plurality of phase-coded digitized radar signals. The radar front end chip also includes a combiner to combine the plurality of phase-coded digitized radar signals into a digital radar data stream for transmission to a central radar processor.