Movable Radar Sensor Elevation Detection via Segmentation
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Solution Overview
Problem
Conventional radar systems require a large number of antennas to detect elevation angles, leading to high complexity and cost, making them expensive and difficult to implement effectively.
Innovation Solution
A radar system with a movably arranged localization sensor that generates a non-homogeneous radiation characteristic, allowing for precise detection of objects in space using a single sensor with a complex signal amplitude and phase, and a method that involves emitting a localization radiation lobe, capturing reflected signals, and correlating them to determine the elevation angle, thereby reducing the need for multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple transmitting and/or receiving antennas are used to detect elevation angle, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the elevation detection function from the traditional multi-antenna approach by using a single radar sensor combined with a movable mounting mechanism. The movement parameters (position, orientation) are separately measured by independent sensors, and the elevation angle is calculated by combining the radar signal data with the movement parameters through signal processing, rather than using multiple antennas simultaneously
Solution Approach 2:
The patent introduces movement parameters as an intermediary element between the radar sensor and the elevation angle detection. The movement parameters (obtained from position and orientation sensors) serve as a mediator that, when combined with the radar signal, enables elevation angle detection without requiring multiple antennas. This intermediary approach simplifies the antenna configuration while maintaining detection precision
2Measurement precision
If multiple transmitting and/or receiving antennas are used to detect elevation angle, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The system segments the elevation detection functionality into two separate components: a single radar sensor for signal detection and independent movement parameter sensors for position and orientation measurement. This segmentation eliminates the need for multiple expensive antenna arrays while achieving the same elevation detection precision through computational integration of the separated functions
Solution Approach 2:
Instead of physically replicating multiple antennas to achieve elevation detection, the patent uses a single radar sensor combined with digital representation of movement parameters. The movement parameters effectively create a virtual copy of the antenna array's directional information, enabling elevation detection through signal processing rather than physical antenna replication
3Measurement precision
If more antennas are used to improve resolution, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces dynamic movement parameters (position and orientation changes over time) to enhance detection resolution without adding more antennas. The movable mounting mechanism allows the single radar sensor to dynamically change its viewing angle, and the movement parameters capture these changes, enabling high-resolution elevation detection through temporal and spatial dynamics rather than static antenna arrays
4Area of stationary object
If a movable radar sensor is used to scan large area, then area coverage is improved, but device complexity increases
Solution Approach 1:
The patent adds the dimension of physical movement to the radar sensor system, transforming it from a fixed single-point detection system to a mobile multi-position scanning system. The movement parameters (position and orientation in space) provide additional dimensional information that, when combined with radar data, enables large-area coverage while using only a single radar sensor, avoiding the complexity of deploying multiple fixed sensors across the area
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 resolution and reliability in detecting objects in space with lower development, manufacturing, and operating costs, while maintaining high update rates and accuracy.
Implementation Method 1
radar sensors are used, which are arranged on a rotor and are therefore arranged to be rotatable about an axis of rotation
Implementation Method 2
The azimuth angle of a reflected signal captured by the radar sensor can be detected via the position of the rotor
Implementation Method 3
The at least one localization sensor has a means for generating a non-homogeneous radiation characteristic, said means being designed such that a localization radiation lobe formed therewith has a signal amplitude that is based on a first localization angle, such that the signal amplitude has a localization signal curve
Data Source
AI summary
The invention relates to a radar system (100) comprising at least one movably arranged localization sensor (1.1, 10.1) which is designed in the form of a radar sensor and comprising means for detecting the position of the at least one localization sensor (1.1, 10.1). The at least one localization sensor (1.1, 10.1) has means for generating a non-homogenous radiation characteristic, said means being designed such that a localization radiation lobe (1.3) formed therewith has a signal amplitude which is based on a first localization angle (50) such that the signal amplitude has a localization signal curve (52), wherein the localization signal curve (52) is based on a second localization angle (54). The invention also relates to a method (800) for detecting an object (8) in space, a second localization component of the reflected localization signal (71) being detected by correlating the reflected signal curve with the non-homogenous radiation characteristic of the localization sensor.