Multi-Frequency Radar System with Overlapping Detection Zones
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Solution Overview
Problem
Existing radar systems with multiple radar apparatuses face challenges in optimizing the combination of detection areas and enhancing information processing efficiency, particularly in detecting targets moving at higher speeds, where ultrasonic sensors struggle to accurately measure distances and speeds.
Innovation Solution
A radar system comprising a first radar apparatus transmitting and receiving signals with a first frequency and a second radar apparatus transmitting and receiving signals with a different frequency, with overlapping detection areas, where the second radar apparatus generates and transmits information to the first radar apparatus for integrated processing, eliminating the need for ultrasonic sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple radar apparatuses with different detection areas are used, then the detection coverage is improved, but the information processing complexity increases
Solution Approach 1:
The radar system is divided into multiple radar apparatuses, each responsible for specific detection areas. The first radar apparatus handles long-range detection while second radar apparatuses handle short-range detection, creating segmented detection zones that reduce the processing burden on any single apparatus.
Solution Approach 2:
The patent combines data from multiple radar apparatuses with different detection areas into a unified detection system. The first radar apparatus integrates information from both long-range and short-range radar apparatuses, creating a merged detection database that comprehensive coverage while maintaining manageable processing complexity.
2Area of stationary object
If ultrasonic sensors are used to detect targets, then the detection area is improved, but the measurement precision for high-speed targets deteriorates
Solution Approach 1:
The patent replaces ultrasonic sensors (acoustic/mechanical system) with radar apparatuses (electromagnetic system) for detecting targets in the detection area. This substitution eliminates the fundamental limitation of ultrasonic sensors regarding high-speed target measurement precision, as radar uses electromagnetic waves that can accurately measure the position and velocity of high-speed targets through Doppler shift and time-of-flight calculations.
3Reliability
If multiple radar apparatuses are integrated, then the detection capability is improved, but the system complexity increases
Solution Approach 1:
The first radar apparatus serves as an intermediary that receives detection data from multiple second radar apparatuses and performs integration processing. This intermediary role consolidates the complexity into a single processing unit rather than requiring each radar apparatus to independently process all data, thereby improving detection capability while managing system complexity.
Solution Approach 2:
The system performs preliminary detection and data processing at individual radar apparatuses before integration. Each radar apparatus pre-processes its detection data locally, and only the processed information is transmitted to the first radar apparatus for final integration, reducing the overall system complexity by distributing the processing workload.
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 configuration allows for an optimal combination of radar apparatuses with different detection areas, enhancing the overall information processing efficiency and improving the detection of targets across various distances and speeds, while reducing system complexity and installation costs.
Implementation Method 1
a first radar apparatus that transmits and receives a signal with a first frequency and has a first detection area
Implementation Method 2
a second radar apparatus that transmits and receives a signal with a second frequency different from the first frequency and has a second detection area different from the first detection area
Data Source
AI summary
A radar apparatus includes a first radar apparatus that transmits and receives a signal with a first frequency and has a first detection area, and a second radar apparatus that transmits and receives a signal with a second frequency different from the first frequency and has a second detection area different from the first detection area. The first radar apparatus and the second radar apparatus are arranged on a vehicle such that the first detection area and the second detection area partially overlap with each other. The second radar apparatus generates second information. The first radar apparatus generates first information, performs arithmetic integration processing based on the first information and the second information to generate integrated information, and transmits the integrated information to a higher-level apparatus.