Multisite Radar Transmitters for Airborne Traffic Detection
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Solution Overview
Problem
Existing radar systems typically have a transmitter and receiver in the same location, limiting their effectiveness in detecting airborne traffic between multiple aircraft.
Innovation Solution
A multisite radar system with multiple stationary transmitters and aircraft-specific receivers, where each transmitter generates and transmits information packets, and the receiver demodulates and determines geographical locations based on received radar signals to detect airborne traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmitter and receiver are located in the same position in a radar system, then the system structure is simple, but the effectiveness in detecting airborne traffic between multiple aircraft is limited
Solution Approach 1:
The radar system is segmented into multiple stationary transmitters distributed across different geographical locations, with each transmitter independently generating and transmitting radar signals. This segmentation enables the system to detect airborne traffic from multiple perspectives, significantly improving detection effectiveness while maintaining relatively simple individual transmitter structures
Solution Approach 2:
Aircraft-specific receivers on board each aircraft act as intermediaries that receive radar signals from multiple stationary transmitters and process the reflected signals. This intermediary approach allows the system to achieve complex multi-site detection capabilities without requiring complex integrated systems, as each receiver handles only local signal processing
2Measurement precision
If multiple stationary transmitters are used to detect airborne traffic, then detection accuracy is improved, but the system complexity increases
Solution Approach 1:
Each stationary transmitter is designed with multi-functionality, serving as both a radar signal source and a geographical reference point. The transmitters use identical hardware configurations and transmission protocols, allowing the system to achieve high detection accuracy through signal processing rather than through increasing the number of different specialized components
Solution Approach 2:
The aircraft-specific receivers on board each aircraft perform self-service by autonomously receiving signals from multiple transmitters, processing the reflected signals, and determining both the aircraft's own location and the locations of other targets. This self-service capability reduces the need for complex centralized processing systems, maintaining manageable system complexity while achieving high measurement precision
3Measurement precision
If aircraft-specific receivers with antenna arrays are used, then the ability to determine geographical location is enhanced, but the device complexity on aircraft increases
Solution Approach 1:
The system transitions from traditional single-point radar measurement to multi-dimensional spatial measurement by utilizing signals from multiple stationary transmitters at different geographical locations. The antenna arrays on aircraft receive signals from multiple directions, enabling the system to determine precise three-dimensional geographical locations through triangulation and signal processing, thereby enhancing location determination capability
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 accurate detection of both the receiver's location and airborne targets, enhancing collision avoidance capabilities for multiple aircraft by providing comprehensive geographical information.
Implementation Method 1
The first receiver may be configured to receive radar signals from the set of multiple stationary transmitters
Implementation Method 2
The conveyed information may include (a) the information packet, and (b) one or more reflections of the information packet from one or more targets
Data Source
AI summary
Systems and methods to detect airborne traffic between multiple airborne aircraft are disclosed. Exemplary implementations may include a set of multiple stationary transmitters that generate and transmit information packets. Individual receivers included in aircraft may receive radar signals with information, including the information packets, and reflections of the information packets from one or more targets (i.e., airborne objects such as other aircraft), all from multiple stationary transmitters. Using the received radar signals, individual receivers may determine the current geographical location of the individual receivers, and the current geographical locations of the one or more targets.