Radar Control Using Compensation Signals for Consistent Reflectivity
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Solution Overview
Problem
Radar systems face challenges in accurately estimating object reflectivity due to varying antenna gain across different frequencies, which affects object detection.
Innovation Solution
A radar control device and method that generates a compensation signal by mixing transmission and reception signals with different center frequencies, producing a discrete signal, and applying a compensation window to ensure consistent product values, thereby mitigating the impact of frequency on antenna gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If radar transmits signals across a frequency band, then it can detect objects over a range of frequencies, but the antenna gain varies with frequency making it difficult to estimate object reflectivity
Solution Approach 1:
The patent applies parameter changes by introducing a compensation signal that adjusts for antenna gain variations across different frequencies. The compensation signal is generated based on the relationship between frequency and antenna gain, allowing the radar to maintain accurate reflectivity estimation despite operating across a broad frequency band where antenna gain naturally varies.
2Measurement precision
If the radar uses a single center frequency, then the antenna gain is consistent, but it cannot compensate for frequency-dependent gain variations when using multiple frequencies
Solution Approach 1:
The patent introduces a compensation signal as an intermediary element that mediates between the transmitted signal and the received signal. This compensation signal carries information about antenna gain characteristics at different frequencies, allowing the system to maintain gain consistency awareness while still utilizing multiple frequencies for enhanced adaptability and object detection capability.
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
Enhances object detection accuracy by generating a compensation signal that is not affected by center frequency, thus overcoming obstacles in radar detection.
Implementation Method 1
mixing and transmitting the first transmission signal and a second transmission signal having a center frequency different from a center frequency of the first transmission signal based on the first transmission signal
Implementation Method 2
receiving a first reception signal reflected by an object
Data Source
AI summary
The disclosure relates to a radar control device and method. Specifically, according to the disclosure, a radar control device comprises a transceiver transmitting a first transmission signal, receiving a first reception signal reflected by an object, and mixing and transmitting the first transmission signal and a second transmission signal having a center frequency different from the first transmission signal based on the first transmission signal, a generator producing a discrete signal by passing the first transmission signal and the first reception signal through a mixer and sampling the first transmission signal and the first reception signal and generating a window for compensation based on a required time and a modulation band set in the second transmission signal, and a producer producing the compensation signal based on the discrete signal and the window for compensation.