Diagonal Radar Antenna Layout for 2D Angle Resolution
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Solution Overview
Problem
Conventional radars struggle to simultaneously detect horizontal and vertical angles of objects due to the ambiguity in angle measurement when multiple objects are at the same distance and speed, and the high cost of TR modules limits their implementation at high frequencies like 77 GHz for vehicles.
Innovation Solution
A radar system with a transmitter antenna unit and receiver antenna unit arranged in a diagonal pattern based on horizontal and vertical intervals, allowing for efficient detection of objects in both directions by transmitting and receiving signals through a transceiver and processing unit, which adjusts antenna spacing to improve angular resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a two-dimensional array antenna is configured, then simultaneous extraction of vertical and horizontal angles is improved, but device complexity increases
Solution Approach 1:
The patent divides the antenna array into multiple groups with specific spacing patterns. By segmenting the array into manageable units with defined geometric relationships, the system achieves two-dimensional angular detection while maintaining structured complexity that can be processed through systematic signal handling.
2Measurement precision
If TR modules are used for two-dimensional array antenna, then angular detection capability is improved, but cost increases
Solution Approach 1:
The patent creates a virtual two-dimensional array effect by strategically positioning a smaller number of physical antennas in a planar configuration. Through signal processing techniques that exploit the geometric relationships between antennas, the system synthesizes the detection capability of a full two-dimensional array without requiring expensive TR modules at each element.
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 enhances angular resolution in both horizontal and vertical directions, enabling precise detection of objects and improving the radar's ability to distinguish between horizontal and vertical angles, while being cost-effective for high-frequency applications.
Implementation Method 1
a radar may include a transmitter antenna unit including a plurality of transmitter antennas arranged in a diagonal direction based on a first horizontal interval and a first vertical interval, receiver antenna unit including a first receiver antenna group and a second receiver antenna group arranged based on the first horizontal interval, a transceiver configured to transmit a transmission signal through the transmitter antenna unit and receive a reflection signal reflected from a target object through the receiver antenna unit
Data Source
AI summary
A radar includes a transmitter antenna unit including a plurality of transmitter antennas based on a first horizontal interval and a first vertical interval, a receiver antenna unit including a plurality of receiver antennas arranged based on a second horizontal interval, a transceiver configured to transmit a transmission signal through the transmitter antenna unit and receive a reflection signal reflected from a target object through the receiver antenna unit and a processing unit configured to extract information about the target object by processing the received reflection signal. The second horizontal interval is smaller than the first horizontal interval.