Satellite Signal Reception Device with Switchable Local Frequency Generator
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Solution Overview
Problem
Current satellite signal reception devices for multiple GNSS systems face challenges in reducing size and power consumption due to the need for separate receivers and local signals for different carrier frequencies, resulting in inefficient power usage and larger device sizes.
Innovation Solution
A satellite signal reception device that includes a local signal generator capable of switching between different local frequencies for various satellite signals, using a reference clock signal to generate signals corresponding to multiple satellite systems, and a frequency converter that converts reception signals into intermediate frequency signals with overlapping frequency bands, allowing for common usage of processors and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate receivers are provided for different satellite positioning systems, then each receiver can be optimized for its specific carrier frequency, but the device size and power consumption increase
Solution Approach 1:
The patent implements a universal receiver architecture where a single receiver can process multiple satellite positioning systems (GPS, GLONASS, Galileo, BeiDou) by dynamically switching between different local frequencies. The local signal generator produces system-specific frequencies on demand, allowing one receiver to replace multiple dedicated receivers, thereby reducing power consumption while maintaining reception performance across all systems.
Solution Approach 2:
The patent employs dynamic frequency switching where the local signal generator changes its output frequency based on which satellite system is currently being received. The receiver dynamically adjusts its operating parameters to match the target system's carrier frequency, enabling a single static hardware platform to perform multiple functions that previously required separate fixed systems.
2Reliability
If separate receivers are provided for different satellite positioning systems, then each receiver can be optimized for its specific carrier frequency, but the device size increases
Solution Approach 1:
The patent implements a universal receiver architecture where a single receiver can process multiple satellite positioning systems (GPS, GLONASS, Galileo, BeiDou) by dynamically switching between different local frequencies. The local signal generator produces system-specific frequencies on demand, allowing one receiver to replace multiple dedicated receivers, thereby reducing device size while maintaining reception performance across all systems.
Solution Approach 2:
The patent merges the functionality of multiple separate receivers into a single integrated receiver unit. By combining the local signal generator and frequency converter into one shared resource that serves all satellite systems, the patent consolidates what would have been separate physical components into a unified structure, directly reducing device volume.
3Use of energy by moving object
If a common local signal is supplied to multiple receivers, then power consumption for generating the local signal is reduced, but separate receivers are still needed for different carrier frequencies
Solution Approach 1:
The patent makes the local signal generator universal by enabling it to produce multiple frequency outputs corresponding to different satellite systems. Instead of having separate local signal generators for each receiver, one generator serves all systems by switching frequencies, further reducing power consumption while simplifying the overall device structure.
Solution Approach 2:
The local signal generator dynamically switches between different output frequencies based on which satellite system is active. This dynamic behavior allows a single generator to replace multiple static generators, reducing both power consumption and structural complexity while maintaining the ability to support all satellite systems.
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 approach enables a compact and power-efficient satellite signal reception device capable of receiving multiple satellite positioning systems by sharing components and reducing the power required for circuit operations, thereby minimizing device size and power consumption.
Implementation Method 1
a frequency converter that converts a reception signal of the first positioning satellite signal into a first intermediate frequency signal by multiplying the reception signal of the first positioning satellite signal by the signal having the first local frequency
Data Source
AI summary
A satellite signal reception device includes: a local signal generator that generates a signal while switching between a signal having a first local frequency corresponding to a first positioning satellite signal and a signal having a second local frequency corresponding to a second positioning satellite signal based on a reference clock signal; and a frequency converter that converts a reception signal of the first positioning satellite signal into a first intermediate frequency signal by multiplying the reception signal of the first positioning satellite signal by the signal having the first local frequency, and converts a reception signal of the second positioning satellite signal into a second intermediate frequency signal of which at least a part of a converted frequency band is in common with the first intermediate frequency signal multiplying the reception signal of the second positioning satellite signal by the signal having the second local frequency.