Radar Warning Receiver Dynamic Situational Awareness
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Solution Overview
Problem
Traditional radar warning receivers lack accurate range determination, geolocation of emitters, and precise incident power measurement, limiting dynamic situational awareness and effective threat minimization for aircraft against attack radar signals.
Innovation Solution
A method and system that receive and analyze attack radar transmission signals to calculate incident power and aircraft position changes, determining movement within the radar beamwidth, and communicate this information to pilots for maneuvering and countermeasure initiation, using antenna gain pattern compensation and geolocation techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional radar warning receivers use received power and emitter equivalent radiated power for range estimation, then a qualitative indication of threat lethality is provided, but accurate range determination cannot be achieved
Solution Approach 1:
The system uses multiple sensors including radar warning receivers, radar sensors, missile approach warning receivers, forward-looking infrared detectors, and electro-optic sensors to continuously feedback information about the threat environment. This multi-sensor feedback loop enables accurate geolocation of emitters and precise range determination by cross-correlating data from different sensing modalities.
Solution Approach 2:
The patent implements a universal threat monitoring system where a single integrated system performs multiple functions: radar detection, geolocation, range determination, and threat assessment. The system uses a common processor to handle inputs from various sensor types and produces unified situational awareness output, eliminating the need for separate specialized systems.
2Measurement precision
If accurate incident power determination is required, then precise threat assessment is enabled, but the complexity increases due to difficulty in obtaining accurate receive antenna gain pattern data
Solution Approach 1:
The system performs self-calibration by using the radar warning receiver's own received signals to determine antenna gain patterns. The processor analyzes the received power across different angles and uses this information to automatically characterize the antenna radiation pattern, eliminating the need for external calibration equipment or complex separate measurement procedures.
3Reliability
If dynamic situational awareness is achieved through multi-sensor integration, then threat minimization capability is enhanced, but the system complexity and processing requirements increase
Solution Approach 1:
The patent merges multiple independent sensor systems into a single integrated threat monitoring system. The radar warning receiver, radar sensor, missile approach warning receiver, forward-looking infrared detector, and electro-optic sensor are combined and processed by a common processor that fuses their outputs to produce unified situational awareness and threat assessment information.
Data Source
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AI summary
A more dynamic situational awareness may be provided by processing received attack radar pulses in a radar warning receiver in such a way as to provide an indication of where the aircraft is within the transmit beamwidth of the attack radar.