Virtual Target Generator Mobile Platform Coupling
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Solution Overview
Problem
Existing Virtual Target Generators (VTGs) are limited in their ability to represent virtual targets in different and improved ways, necessitating a solution to enhance their functionality in RADAR systems.
Innovation Solution
A Virtual Target Generator capable of coupling with a mobile platform, featuring multiple transmit channels and a single receive channel, allowing for the generation of multiple virtual targets at different distances, and optionally introducing a Doppler effect to simulate speed relative to the RADAR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a VTG is coupled with a mobile platform to enable movement of the virtual target, then the adaptability and realism of RADAR testing is improved, but the device complexity and challenges in signal synchronization worsen
Solution Approach 1:
The patent combines the VTG with a mobile platform (such as a vehicle or aircraft), merging two separate systems into one integrated unit. This allows the virtual target to move realistically while maintaining signal synchronization through shared timing references and coordinated control systems.
Solution Approach 2:
The mobile platform serves multiple functions: it provides physical movement for realistic target simulation, houses the VTG electronics, and acts as a reference frame for signal timing. This multi-functionality improves adaptability while managing complexity through shared resources.
2Quantity of substance
If multiple transmit channels are used to generate multiple virtual targets at different distances, then the quantity and richness of virtual targets is improved, but the device complexity increases
Solution Approach 1:
The patent divides the transmit function into multiple independent channels, each capable of generating separate virtual targets at different distances. This segmentation allows simultaneous creation of multiple targets while maintaining independent control over each channel's parameters.
Solution Approach 2:
The patent extends the virtual target generation from a single distance parameter to multiple distance dimensions by adding additional transmit channels. Each channel operates in its own signal dimension, allowing simultaneous generation of targets at different ranges without interference.
3Measurement precision
If Doppler effect is introduced to simulate speed relative to RADAR, then the measurement precision and realism of virtual targets is improved, but the signal processing complexity worsens
Solution Approach 1:
The patent applies Doppler effect by dynamically changing the frequency parameter of the transmitted signal based on the relative velocity between the mobile platform and the RADAR. This parameter modification creates realistic velocity simulations while using well-established signal processing techniques.
Solution Approach 2:
Instead of using complex mechanical systems to physically move targets at controlled speeds, the patent substitutes mechanical movement with electronic signal processing that simulates the Doppler effect. This replaces complex mechanical control with more manageable electronic frequency modulation.
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
Enables the generation of multiple virtual targets with varying distances and optional Doppler effects, enhancing the realism and richness of data displayed in RADAR systems, thereby improving the testing and validation phases of RADAR development.
Implementation Method 1
The VTG processes the received signal and then retransmits it to the RADAR at a certain time later. Note that the signal transmitted from the VTG is not a simple reflection; it is typically processed to delay it and reduce its amplitude
Implementation Method 2
The VTG processes the received signal and then retransmits it to the RADAR at a certain time later. Note that the signal transmitted from the VTG is not a simple reflection; it is typically processed to delay it and reduce its amplitude
Implementation Method 3
A Virtual Target Generator capable of coupling with a mobile platform, featuring multiple transmit channels and a single receive channel, allowing for the generation of multiple virtual targets at different distances, and optionally introducing a Doppler effect to simulate speed relative to the RADAR
Data Source
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AI summary
Disclosed is an improved virtual target generator for use with a RADAR system, wherein the virtual target generator is arranged for coupling with a mobile platform such that movement of the mobile platform relative to the RADAR system facilitates a corresponding movement of the virtual target presented to the RADAR system.