Multi-Radar Transmission Timing for Efficient Target Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radar apparatuses, particularly MIMO radars, face challenges in efficiently detecting target objects due to transmission timing errors, frequency errors, and phase errors, which degrade detection performance and increase system cost, especially in bistatic and multistatic configurations.
Innovation Solution
A radar apparatus and method that employs synchronized transmission signals with defined timing delays between multiple radar sections, using time, frequency, or code multiplexing to maintain detection performance while reducing system cost and timing requirements, allowing simultaneous multiplexing in both monostatic and bistatic configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronized transmission with defined timing delays is implemented, then target detection efficiency is improved, but transmission timing control complexity increases
Solution Approach 1:
The patent implements periodic transmission of signals with defined timing delays between multiple radar sections. The transmission timing alternates between sections in a regular pattern, creating periodic action that simplifies control while maintaining detection efficiency. This periodic structure allows receivers to predict when signals from different sections will arrive, reducing control complexity.
Solution Approach 2:
The radar system is segmented into multiple independent radar sections, each capable of autonomous transmission with predefined timing offsets. This segmentation allows each section to operate independently with simple local control logic, reducing overall system control complexity while improving detection efficiency through coordinated operation.
2Loss of time
If multiple radar sections transmit simultaneously, then measurement time is reduced, but transmission timing errors increase
Solution Approach 1:
The patent introduces a synchronization signal as an intermediary that mediates between multiple radar sections. This synchronization signal carries timing reference information that allows each section to adjust its transmission timing, reducing timing errors while maintaining simultaneous operation. The intermediary signal acts as a common reference that coordinates all sections without requiring complex inter-section communication.
Solution Approach 2:
The system implements feedback mechanisms where each radar section monitors the synchronization signal and adjusts its transmission timing accordingly. This feedback loop continuously corrects timing deviations, maintaining high timing accuracy even during simultaneous transmission. The feedback ensures that timing errors are detected and corrected in real-time.
3Measurement precision
If time multiplexing is used to reduce timing errors, then detection efficiency decreases, but if simultaneous transmission is used, then timing errors increase
Solution Approach 1:
The patent implements dynamic timing adjustment where the transmission timing of each radar section is not fixed but can be adjusted in real-time based on synchronization signals and feedback. This dynamic approach allows the system to optimize between simultaneous transmission (for efficiency) and staggered transmission (for accuracy) by continuously adapting timing parameters. The dynamic nature enables the system to maintain high detection efficiency while minimizing timing errors through adaptive control.
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 solution enhances target detection efficiency by maintaining detectable Doppler frequency range and reducing measurement time, while minimizing errors and system cost, suitable for applications in vehicle safety systems and surveillance.
Implementation Method 1
maintaining detectable Doppler frequency range
Data Source
AI summary
A radar apparatus includes: first radar circuitry, which, in operation, transmits a first transmission signal; and second radar circuitry, which, in operation, transmits a second transmission signal; in which a plurality of transmission periods in which the first transmission signal and the second transmission signal are transmitted include a first transmission period in which a transmission timing for the first transmission signal is later than a transmission timing for the second transmission signal by a defined value, and a second transmission period in which the transmission timing for the second transmission signal is later than the transmission timing for the first transmission signal by the defined value.