Delay Correlation Target Signal Detection with Full-Energy Sampling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current signal receiving systems using delay correlation for target signal determination suffer from misjudging due to incomplete energy consideration, leading to unstable signal processing and resource wastage, as the denominator only accounts for half of the sample data, resulting in an unstable peak interval and increased misjudging probability.
Innovation Solution
The method involves sampling input signals to generate 2N sample values, delaying N sample values, and using conjugate multiplication to calculate a determination value that considers all sample data energy, ensuring the denominator reflects the energy of all sample data, thereby stabilizing the peak interval and reducing misjudging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the delay correlation uses only N sample data for the denominator, then the calculation complexity is reduced, but the measurement precision deteriorates due to incomplete energy consideration
Solution Approach 1:
The patent segments the 2N sample data into two parts: N sample data for the numerator calculation and another N sample data for the denominator calculation. This segmentation allows the denominator to consider all 2N sample data energy while maintaining a structured calculation approach, resolving the contradiction between calculation complexity and measurement precision.
Solution Approach 2:
The patent extends the denominator calculation from one dimension (N sample data) to another dimension (2N sample data) by incorporating additional sample data points. This dimensional expansion ensures complete energy consideration in the denominator, improving measurement precision without excessively increasing calculation complexity.
2Speed
If the denominator considers only half of the sample data, then the calculation speed is improved, but the reliability deteriorates due to unstable peak interval
Solution Approach 1:
The patent segments the sample data usage between numerator and denominator, with the denominator utilizing all 2N sample data points. This segmentation strategy maintains calculation efficiency while improving reliability by ensuring the denominator reflects the complete energy of all sample data, leading to more stable peak intervals.
3Device complexity
If the delay correlation uses incomplete sample data for energy calculation, then the device complexity is reduced, but the manufacturing precision deteriorates in terms of signal determination accuracy
Solution Approach 1:
The patent segments the 2N sample data into distinct groups for numerator and denominator calculations, with the denominator segment incorporating all 2N sample data points. This segmentation approach maintains manageable device complexity while achieving high signal determination accuracy through complete energy consideration.
Solution Approach 2:
The patent expands the denominator's data consideration from N samples to 2N samples, adding another dimension of data coverage. This dimensional expansion improves signal determination accuracy by ensuring the denominator captures the complete energy of all sample data without excessively increasing device complexity.
Data Source
AI summary
A method and associated apparatus using delay correlation for determining whether an input signal is a target signal is provided. The method includes sampling the input signal to generate 2N sample values, the sample values having a period N, where N is a positive integer; calculating the 2N sample values to obtain a first value according to a first operation method; calculating the 2N sample values to obtain a second value according to a second operation method; obtaining a determination value according to the first value and the second value; and determining whether the input signal is the target signal according to the determination value and a threshold.