Phased-Array Radar Interleaving Weather and Object Detection
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Solution Overview
Problem
Current radar systems are inefficient in simultaneously detecting weather conditions and objects, often requiring separate systems and modes that are slow to switch between, which can lead to delayed detection of collisions or weather changes.
Innovation Solution
A phased-array radar system that interleaves weather detection and object detection modes using a single device, allowing for rapid cycling through both modes to determine weather conditions and detect objects based on received signals, including wind shear and object characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single radar system is used for both weather detection and object detection, then device complexity is reduced, but detection speed and reliability deteriorate due to mode switching delays
Solution Approach 1:
The radar system divides the detection function into separate weather detection mode and object detection mode, allowing each mode to be optimized independently while using the same hardware platform. The segmentation enables dedicated signal processing paths for each detection type, improving reliability without requiring completely separate systems.
Solution Approach 2:
The radar system dynamically switches between weather detection mode and object detection mode based on operational requirements. The phased array antenna can rapidly reconfigure beam patterns and signal processing parameters to adapt to different detection modes, maintaining high detection reliability while using a single versatile system.
2Reliability
If separate radar systems are used for weather detection and object detection, then detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The radar system is designed with multi-functionality to perform both weather detection and object detection using the same phased array antenna and signal processing infrastructure. This universal design reduces device complexity and cost while maintaining adequate detection reliability through mode-specific optimization.
Solution Approach 2:
The system merges weather detection and object detection capabilities into a single radar platform, combining their respective signal processing chains and control systems. This consolidation reduces the overall number of components while preserving the specialized detection functions through software-defined radar modes.
3Adaptability or versatility
If traditional radar systems switch between weather and object detection modes, then versatility is maintained, but detection speed deteriorates due to slow mode switching
Solution Approach 1:
The system replaces mechanical scanning and mode switching with electronic beam steering and software-defined signal processing. The phased array antenna uses electronic phase control to rapidly switch between weather and object detection modes without mechanical movement, achieving millisecond-scale mode transitions that preserve both versatility and speed.
Solution Approach 2:
The radar system implements periodic scanning patterns that efficiently alternate between weather detection and object detection modes. By organizing detections into structured periodic cycles, the system maintains comprehensive surveillance of both weather conditions and potential collision objects while optimizing the timing and duration of each mode based on operational priorities.
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 quick and simultaneous detection of weather conditions and objects, improving collision prevention and weather awareness by rapidly switching between detection modes, potentially faster than traditional radar systems.
Implementation Method 1
The direction of the beam may be based on the phase relationship (i.e., phase shift) of the electromagnetic signals transmitted from each antenna of the antenna array
Implementation Method 2
A phased-array radar device may include an antenna array, where each antenna is configured to transmit or receive electromagnetic signals
Implementation Method 3
The electronic scanning may include generating a phase shift in the electromagnetic signals transmitted by the antenna array to control the direction of a beam
Implementation Method 4
The electronic scanning may also include determining a phase shift in electromagnetic signals received by the antenna array
Data Source
AI summary
In some examples, a radar system is configured to mount on an ownship vehicle for interleaving a weather detection mode and an object detection mode. The radar system comprises a phased-array radar device configured to receive weather signals in the weather detection mode, receive sensing signals in the object detection mode, and interleave the weather detection mode and the object detection mode. The radar system further comprises processing circuitry configured to determine weather conditions based on the received weather signals and detect an object based on the received sensing signals.