Road-Segment Radar Transmit Configuration for Reliable Sensing
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Solution Overview
Problem
Existing sensor systems for autonomous and robotic devices face challenges in accurately perceiving and navigating their environment, particularly in dynamic conditions, due to limitations in range, speed, and angle determination of radar signals.
Innovation Solution
Implementing a radar apparatus with a MIMO radar system and FMCW technology to enhance range and speed estimation, along with angle-determination schemes using a receive antenna array, to improve environmental perception and navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radar systems are used for environmental perception, then basic detection functionality is provided, but measurement precision and reliability are insufficient in dynamic conditions
Solution Approach 1:
The radar system is divided into multiple transmit antennas and multiple receive antennas, creating multiple independent signal paths. Each antenna pair provides separate measurement data that can be individually processed and combined, improving overall measurement precision and reliability through diversified sensing channels
Solution Approach 2:
The patent transitions from conventional single-dimension radar measurement to multi-dimensional measurement by incorporating both range and speed estimation simultaneously through FMCW technology. Additionally, the receive antenna array adds angular dimension to the measurement space, creating a comprehensive multi-dimensional environmental perception capability
2Measurement precision
If radar signal parameters are increased to improve detection range and accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The FMCW radar system performs multiple functions simultaneously: it estimates both range and speed of targets using the same transmitted signal and receive antenna array. The system also provides angular information through the antenna array processing, making the radar apparatus universally capable of multiple measurement tasks without requiring separate dedicated systems for each function
Solution Approach 2:
The patent employs frequency modulation of the transmitted radar signal, where the frequency changes over time in a controlled manner. This parameter change enables the system to extract both range and speed information from the same signal by analyzing different aspects of the frequency-time relationship, improving measurement precision without proportionally increasing device complexity
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
Enhances the accuracy and reliability of environmental perception for autonomous vehicles and robotic systems by providing precise range, speed, and angle information, enabling better navigation and object detection.
Implementation Method 1
a MIMO radar system and FMCW technology to enhance range and speed estimation
Implementation Method 2
angle-determination schemes using a receive antenna array
Implementation Method 3
FMCW technology to enhance range and speed estimation
Data Source
AI summary
For example, an apparatus may include a processor, which may be configured to identify a road segment for a vehicle; and to determine a Radar Transmit Configuration (RTC) setting for at least one radar radio of the vehicle based on an RTC allocation corresponding to the road segment. For example, the RTC allocation corresponding to the road segment may be based on a road topology at the road segment. For example, the RTC setting may define a setting of one or more RTC parameters to be implemented for transmission of radar signals by the at least one radar radio at the road segment. For example, the apparatus may include an output to provide RTC setting information based on the RTC setting.