Interference Detector Sensitivity Switching for Radar Echoes
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Solution Overview
Problem
Conventional devices for detecting echoes and interference, such as radar apparatuses and fish finders, often misclassify normal echoes as interference due to high detection sensitivity or fail to detect interference due to low sensitivity, leading to inaccurate signal identification.
Innovation Solution
A detection device that switches between high and low interference detection sensitivity modes based on the number of detected interference signals, using different conditions for each mode to accurately differentiate between echoes and interference, thereby optimizing detection without unnecessary processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high detection sensitivity is used to detect interference signals, then interference detection accuracy is improved, but normal echo signals are false detected as interference
Solution Approach 1:
The patent applies dynamics by making the detection sensitivity adjustable rather than fixed. The control unit dynamically changes the sensitivity level of the interference detection unit based on the detected number of interference signals. When interference signals are frequently detected, sensitivity is increased to improve detection accuracy. When interference signals are rare, sensitivity is decreased to avoid false detection of normal echoes. This dynamic adjustment resolves the contradiction between detection accuracy and false detection rate.
Solution Approach 2:
The patent changes the sensitivity parameter of the interference detection based on the statistical analysis of detected signals. The control unit monitors the number of interference signals over time and adjusts the detection threshold parameter accordingly. This parameter change allows the system to adapt to varying interference conditions, improving detection accuracy when interference is present while maintaining low false detection rates when interference is absent.
2Reliability
If low detection sensitivity is used to avoid false detection, then reliability is improved, but interference signals are not detected accurately
Solution Approach 1:
The system dynamically adjusts sensitivity based on real-time interference conditions. When the control unit detects a high number of interference signals, it increases the sensitivity of the interference detection unit, allowing accurate detection of interference even with the risk of potential false positives. This dynamic response ensures that when interference is actually present, the system can detect it accurately despite using variable sensitivity levels.
Solution Approach 2:
The control unit uses feedback from the interference detection unit to adjust detection sensitivity. The system continuously monitors detection results and uses this feedback to modify the detection threshold. When interference signals are detected, the feedback loop increases sensitivity to ensure accurate detection. This feedback mechanism resolves the contradiction by allowing low sensitivity (for reliability) to be used when interference is absent, while enabling high sensitivity (for accuracy) when interference is present.
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 device accurately detects interference with high sensitivity when needed and avoids false detection of normal echoes as interference, ensuring precise identification of signals in varying interference conditions.
Implementation Method 1
a transceiver for transmitting a transmission signal and receiving an echo caused by the transmission signal to output a reception signal according to an intensity of the echo
Data Source
AI summary
This disclosure provides a detection device, which includes a transceiver for transmitting a transmission signal and receiving an echo caused by the transmission signal to output a reception signal according to an intensity of the echo, the reception signal in one measurement including one or more reception signals, and an interference detector for detecting an interference signal from the one or more reception signals. The interference detector performs a switching operation of switching interference detection processing between first interference detection processing and second interference detection processing that has a higher interference detection sensitivity than in the first interference detection processing, according to the number of the reception signals detected as the interference signals.