Passive Radar Weather Detection Using Distributed Receivers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional weather radar systems fail to provide accurate, timely, and economical weather detection, especially in remote areas, due to limitations in range, resolution, and cost of equipping aircraft with advanced detectors, leading to incomplete and distorted weather information for flight route planning and hazardous weather avoidance.
Innovation Solution
A passive radar weather detection system utilizing distributed passive radar receivers and radar transmitter sources that emit and reflect signals, processing the data to form accurate three-dimensional images of atmospheric objects, enhancing range and resolution through multiple receiver configurations and wireless communication networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radar weather detection systems are used, then weather detection capability is provided, but measurement precision and detection accuracy are insufficient
Solution Approach 1:
The patent combines multiple radar receiver signals from different locations into a single integrated weather detection system. By merging signals from multiple passive receivers that track the same transmitter, the system achieves improved measurement precision and three-dimensional weather mapping capability without requiring each individual receiver to be complex.
Solution Approach 2:
The passive radar receivers are designed to universally detect and process radar signals from various transmitter sources. The system can receive signals from multiple different transmitters and process them through a common signal processing architecture, enabling multi-functional weather detection across different frequency bands and transmitter types.
2Measurement precision
If advanced radar detectors are equipped on aircraft, then weather detection range and resolution are improved, but cost increases significantly
Solution Approach 1:
The system utilizes existing radar transmitter infrastructure to provide weather detection services. Passive receivers capture and process signals that are already being transmitted for other purposes, eliminating the need for expensive active transmitters on each aircraft. The system serves itself by using ambient radar signals for weather detection.
Solution Approach 2:
The patent creates multiple copies of the weather detection function through distributed passive receivers. Instead of equipping each aircraft with expensive advanced detectors, the system distributes simpler receiver units that copy the weather detection capability across multiple locations, achieving collective high resolution through signal integration.
3Reliability
If multiple passive radar receivers are distributed at multiple locations, then weather detection accuracy and coverage are improved, but device complexity increases
Solution Approach 1:
The weather detection system is segmented into multiple independent passive receiver units distributed at different locations. Each receiver independently tracks radar signals from transmitters and processes local weather data. This segmentation improves reliability through geographic distribution while managing complexity by making each unit independent and self-contained.
Solution Approach 2:
The patent introduces a signal processing intermediary that receives and integrates data from multiple distributed passive receivers. This intermediary component coordinates the complex interactions between receivers and transmitters, managing the system complexity centrally while allowing distributed receivers to operate independently, thus improving reliability without proportionally increasing overall system complexity.
4Measurement precision
If radar signals are processed to form three-dimensional images, then measurement precision and weather mapping accuracy are improved, but processing time and computational requirements increase
Solution Approach 1:
The system performs preliminary signal processing and filtering at the receiver level before transmitting data for three-dimensional image formation. By pre-processing radar signals to extract relevant weather information and remove noise early in the signal chain, the system reduces the computational burden on central processing units, thereby decreasing processing time while maintaining image accuracy.
Solution Approach 2:
The patent implements dynamic processing strategies where the level of three-dimensional image processing is adjusted based on weather conditions and detection priorities. During severe weather events, full three-dimensional processing is applied for maximum accuracy. During normal conditions, simplified processing is used to reduce time loss, creating a dynamic balance between measurement precision and processing time.
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 provides accurate and timely weather detection along remote flight corridors, offering improved range and resolution, enabling better flight route planning and weather avoidance by creating comprehensive three-dimensional radar images of cloud structures and precipitation patterns.
Implementation Method 1
radar signals emitted by one or more radar transmitter sources are reflected off atmospheric objects and received by one or more passive radar receivers
Data Source
AI summary
Systems and methods according to one or more embodiments are provided for determining accurate, timely and economical weather detection information. Weather detection information may be provided by one or more passive radar receivers receiving reflected radar signals off atmospheric objects. In one example, a system includes one of more passive radar receivers configured to receive radar signals provided by one or more radar transmitter sources not associated with the one or more passive radar receivers. A data center receives and stores the radar signals from the one or more passive radar receivers. Radar signals are processed to form a radar image of an atmospheric object in the path of the radar transmitter sources. Additional systems and methods are also provided.