RF Phase Difference Guidance for Aerial Vehicle Tracking
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Solution Overview
Problem
Existing aerial vehicle guidance systems rely on reflected laser or RF signals, which reduce tracking reliability and require additional target tracking systems, making them complex and costly.
Innovation Solution
A flight guidance apparatus that transmits RF signals encoded with transmission direction information, allowing guided aerial vehicles to control flight direction by measuring phase differences between signals from multiple antennas, enabling reliable and simple target tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reflected laser signal reception is used for target tracking, then tracking function is achieved, but reliability is reduced and additional target tracking systems are required
Solution Approach 1:
The patent replaces the optical-mechanical laser tracking system with an electromagnetic RF signal system. The guided aerial vehicle uses RF signal reception and phase difference measurement instead of laser signal reception, eliminating the need for complex target tracking systems while improving tracking reliability through more robust RF signal processing
Solution Approach 2:
The patent introduces RF signals as an intermediary medium for target tracking. Instead of directly using laser signals that require complex reflection and detection systems, RF signals are transmitted from the ground-based flight guidance apparatus and received by the guided aerial vehicle, providing a more reliable and simpler tracking mechanism
2Measurement precision
If phase difference measurement of RF signals is used for flight direction control, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the RF signal transmission into multiple spatially separated antennas. By transmitting RF signals from at least two antennas and measuring the phase difference between received signals, the system achieves precise flight direction control through spatial segmentation of the transmission system
Solution Approach 2:
The guided aerial vehicle uses its own received RF signals to determine flight direction through phase difference measurement. The system self-regulates its flight path by comparing the phase differences of signals from multiple antennas with decoded transmission direction information, eliminating the need for external control mechanisms
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 solution enhances the reliability and simplicity of aerial vehicle guidance, reducing the need for additional tracking systems and improving control precision while maintaining cost-effectiveness.
Implementation Method 1
a flight guidance apparatus transmits a radio frequency (RF) signal encoded with transmission direction information to an antenna
Implementation Method 2
The guided aerial vehicle controls a direction of flight by receiving RF signals, measuring a phase difference between the RF signals
Data Source
AI summary
A flight guidance technique for guiding an aerial vehicle to track a target is provided. A flight guidance apparatus transmits a radio frequency (RF) signal encoded with transmission direction information to an antenna. A guided aerial vehicle receives RF signals transmitted through two antennas spaced apart from each other, measures a phase difference between the RF signals, and compares the measured phase difference with a result of decoding the transmission direction information to control a direction of flight.