Radar Antenna Array Vertical Spacing Angular Resolution
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Solution Overview
Problem
Conventional radars require large sizes and numerous components to achieve high angular resolution, making them cumbersome for detecting and tracking targets due to the need for multiple receiver antennas arrayed in both horizontal and vertical directions.
Innovation Solution
The radar system efficiently arranges multiple transmitter and receiver antennas in a vertical and horizontal configuration with phase differences to enhance angular resolution, allowing for precise detection in both directions by implementing a transmitter antenna unit and a receiver antenna unit with specific spacing and phase shifts, enabling MIMO processing and non-uniform linear array interpolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple receiver antennas are arrayed to increase angular resolution, then angular resolution is improved, but the overall size of the radar increases
Solution Approach 1:
The patent introduces vertical spacing between transmitter and receiver antennas, adding a vertical dimension to the antenna array configuration. This enables the system to achieve high angular resolution in both horizontal and vertical directions without proportionally increasing the horizontal footprint, thus resolving the contradiction between angular resolution and radar size.
Solution Approach 2:
The patent employs a nested antenna configuration where receiver antennas are positioned both horizontally and vertically relative to transmitter antennas. This nested arrangement maximizes the use of three-dimensional space, allowing multiple antennas to be compactly integrated while maintaining the required spacing for angular resolution.
2Measurement precision
If multiple receiver antennas are arrayed in both horizontal and vertical directions, then angular resolution is improved, but the number of components connected to transceiver increases
Solution Approach 1:
The patent divides the antenna system into distinct transmitter antenna groups and receiver antenna groups with specific spacing relationships. This segmentation allows for modular configuration where the same antenna types can be reused in different spatial positions, reducing the total number of unique components required while maintaining high angular resolution capability.
3Measurement precision
If transmitter antennas are vertically spaced with vertical offset, then detection precision in vertical direction is improved, but device complexity increases
Solution Approach 1:
The patent employs asymmetric vertical spacing where receiver antennas are positioned at different vertical offsets relative to transmitter antennas. This asymmetric configuration optimizes the vertical beamforming capability and angular resolution without requiring symmetric complexity in all aspects of the antenna design, thus improving vertical detection precision while managing 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
This configuration improves angular resolution and detection precision in both horizontal and vertical directions, reducing the overall size of the radar while maintaining effective beamforming and signal reception, thereby enhancing the radar's ability to detect targets over long and short ranges.
Implementation Method 1
a radar needs to have high angular resolution to detect or track the distance, speed, and angle of a target device by transmitting and receiving electromagnetic waves
Implementation Method 2
a radar needs to have high angular resolution to detect or track the distance, speed, and angle of a target device by transmitting and receiving electromagnetic waves
Implementation Method 3
a radar needs to have high angular resolution to detect or track the distance, speed, and angle of a target device
Data Source
AI summary
A radar includes a transmitter antenna unit that includes multiple transmitter antennas arranged at a first horizontal interval and a vertical interval; a receiver antenna unit that includes a first receiver antenna group including multiple first receiver antennas arranged at the first horizontal interval and a second receiver antenna group including multiple second receiver antennas arranged at one or more second horizontal intervals; a transceiver that transmits sending signals through the transmitter antenna unit and receives returning signals reflected from a target object trough the receiver antenna unit; and a processing unit that derives information about the target object by processing the received returning signals.