Radar Power Control via Reflectivity Feedback
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Solution Overview
Problem
Conventional radar technologies face challenges in balancing power consumption and detection distance, particularly due to factors like reflectivity and distance between the radar and the detected object, leading to incomplete object detection and unnecessary power usage.
Innovation Solution
A radar power control method that adjusts emission power based on the reflectivity of detected points and echo signal strength, determining whether to increase power for longer detection ranges while minimizing power consumption by identifying echo-free regions and distinguishing between relevant and irrelevant targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the emission power of the laser pulse is increased to prolong detection distance, then the detection distance is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the emission power adjustable rather than fixed. The radar system dynamically changes the emission power based on real-time detection conditions, switching between high power (when reflectivity is high and distance is large) and low power (when reflectivity is low or distance is small), thereby resolving the contradiction between detection distance and power consumption
Solution Approach 2:
The patent changes the parameter of emission power based on detected reflectivity and distance. By monitoring the reflectivity of the detected object and adjusting the emission power accordingly, the system optimizes the balance between achieving sufficient detection distance and minimizing power consumption
2Length of stationary object
If the emission power is increased when no echo signal is received, then the detection distance may be prolonged, but the power consumption increases unnecessarily
Solution Approach 1:
The patent uses feedback from echo signal detection to control emission power. When an echo signal is received, the system uses this feedback information (reflectivity and distance) to determine whether to increase power for subsequent detections. When no echo signal is received, the system avoids unnecessary power increase, thus preventing energy waste while maintaining the ability to detect distant objects when conditions permit
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
This method effectively prolongs detection distance while reducing unnecessary power consumption by dynamically adjusting emission power according to reflectivity and target type, ensuring accurate detection without damaging sensitive objects or wasting energy on undetectable areas.
Implementation Method 1
the laser pulse may reach the detected object and may be reflected on a surface of the detected object. After detecting a laser pulse reflected back (namely, an echo signal)
Data Source
AI summary
A radar power control method and an apparatus are provided. The method includes: emitting a first detection signal at a target emission angle; obtaining a reflectivity of a first detection point of the first detection signal if signal power of an echo signal of the first detection signal is less than a preset power threshold, where the first detection point is a point on a surface of a detected object in a direction of the target emission angle; and increasing emission power corresponding to the target emission angle if the reflectivity of the first detection point is greater than a preset first threshold. The solution helps consider both power consumption and a detection distance of a radar.