Generic RF Receiver Digital Filtering Multiple Signals
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Solution Overview
Problem
Conventional high-frequency signal receivers require multiple reception channels for processing different RF signals, leading to increased size, weight, and complexity, with no generic component capable of adapting to various signal processing tasks effectively.
Innovation Solution
A generic high-frequency signal receiver design that processes multiple RF signals simultaneously using digital individual filter circuits and digital processing units, with demodulation circuits upstream of analog-to-digital conversion, and digital filter circuits to handle carrier frequencies above the maximum sampling frequency, connected via a digital bus to the aircraft's central computer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple reception channels are used to process different RF signals, then signal processing capability is improved, but device complexity and size increase
Solution Approach 1:
The patent implements a universal reception channel that can process multiple RF signals with different carrier frequencies through software configuration rather than hardware duplication. The single reception channel is designed to be reconfigurable, allowing it to adapt to different signal types (GPS, GLONASS, GALILEO, WBAS) by loading appropriate processing algorithms, thereby eliminating the need for multiple dedicated reception channels while maintaining full signal processing capability.
Solution Approach 2:
The invention changes the operating parameters of the reception channel dynamically based on the input signal characteristics. The system automatically detects the carrier frequency and signal type, then adjusts filtering parameters, demodulation settings, and processing algorithms accordingly. This parameter-based adaptation allows a single hardware channel to efficiently handle multiple signal types without requiring physical reconfiguration or multiple dedicated channels.
2Adaptability or versatility
If multiple reception channels are used to process different RF signals, then signal processing capability is improved, but weight increases
Solution Approach 1:
The patent implements a universal reception channel that can process multiple RF signals with different carrier frequencies through software configuration rather than hardware duplication. The single reception channel is designed to be reconfigurable, allowing it to adapt to different signal types (GPS, GLONASS, GALILEO, WBAS) by loading appropriate processing algorithms, thereby eliminating the need for multiple dedicated reception channels while maintaining full signal processing capability.
Solution Approach 2:
The invention merges the functionality of multiple dedicated reception channels into a single integrated channel. By combining signal acquisition, tracking, and processing functions into one universal channel that can be software-reconfigured, the system reduces the total number of hardware components, thereby reducing weight while maintaining the ability to process multiple satellite navigation signals simultaneously.
3Device complexity
If a generic receiver module is used, then device complexity is reduced, but adaptability to different signal processing tasks decreases
Solution Approach 1:
The patent implements a dynamic reception channel that can change its operating characteristics in real-time based on the detected signal properties. The system includes automatic signal recognition capabilities that identify the carrier frequency and signal type, then dynamically adjust filtering parameters, demodulation methods, and processing algorithms. This dynamic adaptability allows a single generic receiver module to effectively process different signal types (GPS L1/L2, GLONASS L1/L2, GALILEO E1/E5, WBAS) without requiring hardware modifications.
Solution Approach 2:
The invention incorporates preliminary signal acquisition and recognition functions that automatically detect and characterize incoming RF signals before main processing begins. The system performs initial frequency estimation, signal type identification, and parameter measurement, then pre-configures the reception channel with appropriate processing parameters. This preliminary action enables the generic receiver to quickly adapt to different signal types and maintain optimal processing performance across diverse satellite navigation signals.
Data Source
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AI summary
The present invention relates to a high-frequency signal receiver simultaneously receiving several such signals received by at least one antenna and comprising analogue/digital conversion circuits (13, 14) converting these signals into digital form, and this receiver is characterized in that it comprises digital circuits for individual filtering which respectively filter each of the carrier frequencies of these signals (16.1 to 16.3) and circuits for digital processing (17.1 to 17.3).