Multi-Radar Object Detection with Adaptive Signal Processing
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Solution Overview
Problem
There is a need for a technology that enables accurate detection of objects using a radar apparatus, as existing methods struggle to achieve high accuracy in object detection.
Innovation Solution
An information processing system comprising multiple radar apparatuses, a distance calculator, and a processor that switches between detecting different reflection points at close distances and combining digital radar signals to detect a common reflection point at longer distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple radar apparatuses detect different reflection points at close distances, then detection coverage and resolution are improved, but detection accuracy for distant objects deteriorates
Solution Approach 1:
The system dynamically switches between two detection modes based on the distance to the target object. For close-range targets, it uses different reflection point detection mode with multiple radar apparatuses to achieve high resolution. For distant targets, it switches to in-common reflection point detection mode with combined digital radar signals to maintain accuracy. This dynamic adaptation resolves the contradiction between close-range resolution and distant-range accuracy.
Solution Approach 2:
The system changes the detection parameter mode based on distance threshold. When distance is less than the threshold, it uses different reflection points detection parameter set. When distance is greater than or equal to the threshold, it uses in-common reflection point detection parameter set. This parameter change allows the system to optimize detection accuracy for different ranges, resolving the contradiction.
2Measurement precision
If digital radar signals from multiple radar apparatuses are combined to form a large aperture array antenna, then detection accuracy for distant objects is improved, but system complexity increases
Solution Approach 1:
The system segments the detection function into two distinct modes: close-range detection using individual radar apparatuses and distant-range detection using combined digital signals. This segmentation allows the complex signal combination operation to be performed only when necessary (for distant targets), reducing overall system complexity while maintaining high accuracy when needed.
Solution Approach 2:
The system dynamically activates the complex signal combination processing only when the target distance requires it. The processor determines the appropriate detection mode based on distance threshold, dynamically switching between simple and complex processing paths. This dynamic approach maintains detection accuracy for distant objects while avoiding unnecessary complexity for close-range detections.
3Device complexity
If a single radar apparatus is used for both close and distant object detection, then device simplicity is maintained, but detection accuracy deteriorates
Solution Approach 1:
The system achieves multi-functionality by enabling multiple radar apparatuses to work together in two different modes: close-range mode with different reflection point detection and distant-range mode with in-common reflection point detection. This universal approach allows the radar system to maintain high detection accuracy across different ranges without requiring completely separate devices, balancing simplicity and precision.
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
The system achieves high accuracy in object detection by utilizing multiple radar apparatuses to detect different reflection points at close ranges and forming a large aperture array antenna to detect common reflection points at longer ranges.
Implementation Method 1
a process of detecting different reflection points on the object to be performed, the detections of the different reflection points on the object being performed by use of respective radar apparatuses of the plurality of radar apparatuses
Implementation Method 2
the detection of the in-common reflection point on the object being performed by digital radar signals from the respective radar apparatuses of the plurality of radar apparatuses being combined
Data Source
AI summary
An information processing system according to an embodiment of the present technology includes a plurality of radar apparatuses, information processing apparatuses, and an output apparatus. The information processing apparatus includes a distance calculator and a processor. The distance calculator is used to calculate a distance to an object, the calculation of the distance being performed using at least one of the plurality of radar apparatuses. The processor causes, when the distance to the object is less than a specified threshold, a process of detecting different reflection points on the object to be performed, the detections of the different reflection points on the object being performed by use of respective radar apparatuses of the plurality of radar apparatuses; and causes, when the distance to the object is greater than or equal to the specified threshold, a process of detecting an in-common reflection point on the object to be performed, the detection of the in-common reflection point on the object being performed by digital radar signals from the respective radar apparatuses of the plurality of radar apparatuses being combined. The output apparatus includes an output section that outputs reflection-point information regarding the reflection point on the basis of the detection processes performed by the processors.