GPS Signal Restoration via Synchronized Replication
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Solution Overview
Problem
GPS signals are often disrupted in battlefield environments due to jamming, leading to safety threats in both military and civilian applications, necessitating a method to restore GPS signals in GPS-denied conditions.
Innovation Solution
A system and method that calculates and transmits a broadcast-synchronized GPS signal to a target by determining parameters such as transmit delay, Doppler shift, and chipping frequency offset for visible GPS satellites, using a GPS synchronization module and signal generating module to recreate and transmit the signal, ensuring synchronization with the target's location and satellite positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS signals are transmitted in battlefield environments, then navigation and location information can be obtained, but the signals are disrupted by jamming causing safety threats
Solution Approach 1:
A GPS signal restoration system acts as an intermediary between GPS satellites and receivers in jammed environments. The system receives authentic GPS signals, processes them through synchronization modules, and retransmits restored signals that bypass the jamming interference, enabling reliable navigation without direct satellite-to-receiver communication
Solution Approach 2:
The system creates accurate copies of authentic GPS signals by receiving original satellite transmissions, processing them through synchronization and restoration modules, and generating replicated signals that maintain the temporal and spatial characteristics of the original GPS signals for use in denied environments
2Reliability
If GPS signal restoration is implemented, then navigation reliability is improved in GPS-denied environments, but system complexity increases
Solution Approach 1:
The GPS signal restoration system is divided into distinct functional modules including signal reception units, synchronization modules, processing units, and transmission components. This segmentation allows each module to perform a specific function independently, simplifying the overall system architecture and facilitating maintenance while ensuring reliable operation in GPS-denied environments
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
Effectively restores GPS signals in GPS-denied environments by accurately recreating and transmitting signals, ensuring reliable navigation and location information, even in conditions of intentional or unintentional jamming.
Implementation Method 1
calculating a Doppler shift for each of the plurality of visible GPS satellites
Data Source
AI summary
A method and system for restoring a GPS signal is provided. The method including the steps of receiving a target location, receiving location of visible satellites, calculating a transmit delay, calculating a Doppler offset, calculating a chipping offset, computing navigating data and PRN codes, formulating signals using the transmit delay, Doppler offset, chipping offset, navigation data and PRN codes, and transmitting the formulated signal.