Radar Target Trajectory Simulation Using Drone Echo Delay Profiles
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Solution Overview
Problem
Existing radar simulation methods are limited in accurately simulating the trajectory of radar targets, particularly in training operators and calibrating radar systems, as they often rely on mock vehicles or stationary transceivers, which may not fully replicate real-world scenarios.
Innovation Solution
A method and system for simulating a radar target's trajectory using a simulating vehicle, such as a drone, that maneuvers according to a defined simulation profile. This profile includes a spatial simulation profile for azimuth and elevation, and a signal delay profile to simulate the target's distance and characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mock vehicle is moved in the actual trajectory to simulate a target, then the simulation can be performed in real conditions, but the complexity of the simulation system increases and the accuracy of trajectory simulation is limited by physical constraints of the mock vehicle
Solution Approach 1:
The patent uses a stationary transceiver to generate simulated radar echoes that copy the expected return signals from targets at specific positions, eliminating the need for physical mock vehicles to traverse trajectories. The transceiver creates artificial radar returns that replicate what a real target would produce, achieving trajectory simulation without moving physical objects.
Solution Approach 2:
The patent replaces the mechanical system of moving mock vehicles with an electronic signal processing system. Instead of physically transporting a drone or glider along a trajectory, the system uses a stationary transceiver to generate and transmit simulated radar echo signals that mathematically represent target returns from various positions, substituting mechanical motion with electronic signal generation.
2Device complexity
If stationary transceivers are placed around the radar to simulate targets, then the system complexity is reduced, but the ability to simulate dynamic trajectories and moving targets is limited
Solution Approach 1:
The patent implements dynamic trajectory simulation using a stationary transceiver by programmatically controlling signal transmission timing and characteristics. The system can simulate targets moving along any desired trajectory by dynamically adjusting the delay and modulation of transmitted signals, allowing the simulation of accelerating, decelerating, and maneuvering targets without physical movement of hardware.
Solution Approach 2:
The patent changes the temporal and frequency parameters of transmitted signals to simulate target motion. By varying the time delay, signal phase, and frequency modulation of the transmitted echoes, the system can represent targets at different positions, velocities, and accelerations along trajectories, achieving versatile dynamic simulation through parameter manipulation rather than physical reconfiguration.
3Measurement precision
If an RF target simulator is connected instead of the radar antenna, then the simulation accuracy is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent introduces a stationary transceiver as an intermediary device positioned between the radar system and the simulation environment. This transceiver receives control signals and generates appropriate radar echo simulations, acting as a mediator that bridges the radar antenna and the virtual target scenarios, providing accurate simulation without requiring replacement of the entire radar antenna system.
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
The system effectively simulates the trajectory of radar targets, enabling more realistic training and calibration of radar systems by accurately replicating the spatial and signal characteristics of actual targets within the radar's field of view.
Implementation Method 1
a receiving transducer... receives signals from the radar
Implementation Method 2
a transmitting transducer... transforms the analog signal to a signal for transmission to the radar
Data Source
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AI summary
A method for simulating a trajectory of a radar target, the method includes the procedures of determining a simulated trajectory of the simulated target and determining a simulating vehicle trajectory for a simulating vehicle. The simulating vehicle trajectory is defined according to a simulation profile. The simulation profile at least includes a spatial simulation profile and a signal delay profile. The method further includes the procedures of maneuvering the simulating vehicle according the spatial simulation profile, receiving a radar signal by the simulating vehicle and retransmitting, a signal toward the radar at least according to.the signal delay profile.