Radar Reception Amplifier Operability Verification
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Solution Overview
Problem
Existing radar systems face issues with determining the operability of switchable reception amplifiers, leading to potential signal distortion or reduced detection range due to incorrect amplification, and require unnecessary use of receiver units during calibration.
Innovation Solution
A method and device that calibrate the radar system by transmitting signals with specific frequencies, applying amplitude modulation, and analyzing these signals to determine the reception amplifier's functionality without requiring the receiver unit, allowing for simultaneous verification of switchability and calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception amplifier is not monitored explicitly, then the radar system operates without additional calibration complexity, but the signal distortion and detection failures occur due to incorrect amplification
Solution Approach 1:
The patent applies preliminary action by performing the reception amplifier operability determination during the calibration phase before actual radar measurements. The calibration signals are processed through the reception amplifier and switching sequence in advance, allowing the system to verify amplifier functionality and store results for later use during operational measurements, thus ensuring reliability without adding complexity to the measurement process
Solution Approach 2:
The system uses its own calibration infrastructure (transmitting unit, receiving unit, and signal processing chain) to automatically determine reception amplifier operability. The calibration signals generated and processed by the radar system itself serve dual purposes: both calibrating the system and verifying amplifier functionality, eliminating the need for separate external testing equipment or procedures
2Productivity
If the receiver unit is used for calibration, then the calibration can be performed, but the receiver unit is unnecessarily consumed and cannot be used for actual measurements
Solution Approach 1:
The patent performs the reception amplifier operability determination during the calibration phase before actual radar measurements begin. By completing this verification in advance and storing the results, the system ensures that the reception amplifier is functioning correctly without requiring the receiver unit to be occupied during the calibration process, thus maintaining measurement throughput while completing necessary calibration tasks
3Reliability
If plausibility check is used for reception amplifier monitoring, then the system remains simple, but signal distortion occurs when amplification is incorrect
Solution Approach 1:
The patent implements feedback by processing calibration signals through the reception amplifier and switching sequence, then analyzing the output signals to determine amplifier operability. The system compares the processed calibration signals against expected characteristics and uses this feedback information to verify amplifier functionality, ensuring signal accuracy through a systematic monitoring method that integrates seamlessly with the existing calibration infrastructure
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
Enables rapid, accurate, and metrologically simple determination of the reception amplifier's operability, reducing signal distortion and unnecessary receiver unit usage, while compensating for frequency drift and non-linear characteristics.
Implementation Method 1
a voltage-controlled oscillator (16), wherein before the start-up of the radar system (1), a calibration for compensating a frequency deviation of the output frequency of the oscillator (16) is performed
Implementation Method 2
a receiving unit (14), wherein before the start-up of the radar system (1), a calibration for compensating a frequency deviation of the output frequency of the oscillator (16) is performed
Data Source
AI summary
A method for determining the functionality of a switchable reception amplifier of a radar system with a transmitting unit, a receiving unit and a voltage-controlled oscillator, wherein, before the radar system is started up, calibration is carried out in order to compensate for a frequency deviation of the frequency emitted by the oscillator. The invention provides for at least one calibration cycle to be run with at least one first signal at a first frequency and one second signal at a second frequency during calibration of the oscillator, wherein the first signal and the second signal are transmitted by the transmitting unit and are received by the receiving unit, wherein the reception amplifier is switched with a switching sequence, which results in amplitude modulation of the first and second signals, and the amplitude modulation is used to determine the functionality of the reception amplifier.