Normalized Phase Shift Correlation for Radar Pulse Location
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Solution Overview
Problem
Current radar detection systems require significant processing power and time to determine the location of radio wave transmitters, which can lead to delays in aircraft evading detection, especially when transmitters emit pulses with varying frequencies.
Innovation Solution
A computer-implemented method that correlates radio wave pulses by determining normalized phase shifts and frequencies, allowing for the identification of pulses originating from the same transmitter, thereby reducing processing time and improving location determination accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each captured radio wave pulse is processed to determine angle of arrival and transmitter location, then location determination accuracy is improved, but processing time and computational power requirements increase significantly
Solution Approach 1:
The system performs preliminary grouping of radio wave pulses based on frequency matching before location determination. By pre-organizing pulses into frequency-based groups, the system reduces the computational burden of subsequent processing while maintaining accurate location determination through normalized phase shift correlation.
Solution Approach 2:
The processing system is divided into distinct stages: frequency-based pulse grouping, normalized phase shift calculation, and location determination. This segmentation allows each stage to operate independently and efficiently, reducing overall processing time while preserving measurement precision.
2Productivity
If radio wave pulses are grouped by frequency to reduce processing time, then processing efficiency is improved, but location determination accuracy deteriorates when transmitters use varying frequencies
Solution Approach 1:
The system transforms the frequency parameter by normalizing phase shifts across different frequencies to a common reference. This parameter transformation allows pulses from transmitters with varying frequencies to be accurately correlated and grouped, maintaining location determination precision while preserving processing efficiency benefits.
Solution Approach 2:
Normalized phase shift serves as an intermediary parameter that bridges pulses of different frequencies. By using this intermediate representation, the system can accurately match pulses from the same transmitter even when frequencies vary, resolving the contradiction between efficiency and accuracy.
3Productivity
If normalized phase shift correlation is used to identify pulses from the same transmitter, then processing time is reduced and location determination is improved, but system complexity increases
Solution Approach 1:
The system extracts the normalized phase shift parameter from the full signal processing chain and uses it as the primary correlation metric. By focusing on this specific extracted feature rather than processing entire signals, the system achieves fast processing with manageable algorithmic complexity.
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
This method enables faster and more accurate determination of radio wave transmitter locations, enhancing the ability of aircraft to evade radar detection by efficiently processing and correlating captured pulses.
Implementation Method 1
An aircraft flying over a territory with a radar detection system may be struck by several radio wave pulses from the transmitters
Implementation Method 2
These computing systems determine information about a given transmitter by first processing each captured radio wave pulse in order to determine an angle that each pulse arrives at the aircraft
Data Source
AI summary
A method for automatically correlating radio wave pulses includes deterring a first normalized phase shift that corresponds to a first radio wave pulse. The method further includes determining a second normalized phase shift that corresponds to a second radio wave pulse. The method further includes determining the first normalized first normalized phase shift is equal to the second normalized phase shift. The method further includes in response to determining the first normalized phase shift is equal to the second normalized phase shift, correlating the first radio wave pulse and the second radio wave pulse as originating from a same radio wave transmitter. The method further includes transmitting a signal indicative of the first radio wave pulse and the second radio wave pulse as originating from the same radio wave transmitter through a circuit.