Self-Testing Radar Transmitter Receiver Calibration
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Solution Overview
Problem
Existing radar and lidar sensors require complex and aging-sensitive components for calibration, necessitating return to manufacturers for testing, which is inefficient and costly.
Innovation Solution
A self-testing transmitter/receiver system that converts signals at intermediate and transmission frequencies, allowing on-site calibration without passive components, using active components like mixers and amplifiers, and simulating environments with controlled reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex passive components such as filters are used for calibration, then measurement precision is improved, but device complexity increases and reliability decreases due to aging
Solution Approach 1:
The transmitter/receiver performs self-testing by generating test signals and comparing received signals with expected values, eliminating the need for external calibration equipment and complex passive components
Solution Approach 2:
The patent removes complex passive components like filters from the calibration process by using active components that can generate and process test signals electronically
2Measurement precision
If manufacturer intervention is required for testing, then measurement precision is maintained, but loss of time increases and productivity decreases
Solution Approach 1:
The transmitter/receiver autonomously performs calibration and testing functions that previously required manufacturer intervention, enabling on-site calibration without time loss
Solution Approach 2:
The system performs self-testing and calibration actions in advance or during operation, eliminating the need to return to the manufacturer for testing
3Manufacturing precision
If passive components are used for calibration, then manufacturing precision is maintained, but reliability decreases due to aging
Solution Approach 1:
The patent replaces passive mechanical/electrical components with active electronic components that can generate and process signals, improving reliability by eliminating aging-sensitive passive components
Solution Approach 2:
The active components in the transmitter/receiver perform self-calibration without requiring external passive components, improving reliability through autonomous operation
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 robust, efficient, and cost-effective on-site calibration and simulation of environments for radar and lidar sensors, reducing the need for manufacturer intervention and maintaining consistent performance.
Implementation Method 1
convert a first signal at least at one intermediate frequency level into a second signal at a transmission frequency level
Implementation Method 2
convert the third signal in the transmission frequency level into a fourth signal in the at least one intermediate frequency level
Implementation Method 3
output the second signal as an electromagnetic signal via an output
Implementation Method 4
receive a third signal as an electromagnetic signal via an input
Data Source
AI summary
A transmitter/receiver for transmitting and receiving an electromagnetic signal. The electromagnetic signal is provided for exchange with a sensor for object detection. The transmitter/receiver has an analog part which is set up to: convert a first signal at least at one intermediate frequency level into a second signal at a transmission frequency level and output the second signal as an electromagnetic signal via an output; receive a third signal as an electromagnetic signal via an input; and/or convert the third signal at the transmission frequency level into a fourth signal at the at least one intermediate frequency level. The third signal can be derived from the second signal. The transmitter/receiver is set up to generate a test signal and feed it into the analog part as the first signal and to test the analog part by comparing the test signal and the fourth signal.