Golay Sequence Length Adjustment for Radar Object Recognition
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Solution Overview
Problem
The IEEE 802.11ad and IEEE 802.11ay wireless communication systems face challenges with signal attenuation at 60 GHz frequencies, limiting the recognizable distance and degrading data communication efficiency when used for radar operations due to high frequency-dependent signal loss and oxygen absorption, as well as occupying wireless resources intended for data communication.
Innovation Solution
An electronic device is equipped with a wireless communication module that estimates the predicted distance to an object and adjusts the length of the Golay sequence in signals to optimize recognition efficiency and data communication efficiency, by transmitting signals with varying Golay sequence lengths to determine the appropriate sequence length for effective object recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If IEEE 802.11ad or IEEE 802.11ay wireless communication system is used for radar operation at 60 GHz, then high precision object recognition is achieved, but signal attenuation increases and recognizable distance is restricted
Solution Approach 1:
The patent applies dynamics by making the Golay sequence length adjustable rather than fixed. The system dynamically selects the sequence length based on the predicted distance to the target object, allowing optimization of signal properties for different propagation conditions. This resolves the contradiction by adapting the sequence length to compensate for signal attenuation at longer distances while maintaining high precision for near-field recognition.
Solution Approach 2:
The patent changes the parameter of Golay sequence length to address the contradiction. By varying the sequence length parameter, the system optimizes the balance between signal attenuation resistance and recognition precision. Longer sequences provide better correlation properties for distant targets, while shorter sequences maintain efficiency for near-field recognition, thus resolving the trade-off between precision and attenuation.
2Length of moving object
If Golay sequence length is increased to overcome signal attenuation, then recognizable distance is extended, but data communication efficiency is degraded
Solution Approach 1:
The system dynamically adjusts the Golay sequence length based on the predicted distance to the target. For far-field radar operations, longer sequences are used to extend recognizable distance, while for near-field applications or data communication, shorter sequences are selected to maintain efficiency. This dynamic adaptation resolves the contradiction by matching sequence length to operational requirements.
Solution Approach 2:
The patent applies local quality by using different Golay sequence lengths for different spatial scenarios. Instead of using a uniform sequence length, the system selects appropriate sequence lengths based on local conditions (distance to target), optimizing performance for each specific operational context rather than compromising overall performance.
3Length of moving object
If fixed long Golay sequence is used for radar operation, then object recognition distance is extended, but wireless resources for data communication are occupied
Solution Approach 1:
The system dynamically selects Golay sequence length based on predicted distance, using longer sequences only when necessary for far-field recognition. For near-field applications or when data communication is prioritized, shorter sequences are used, freeing up wireless resources. This resolves the contradiction by allocating wireless resources adaptively rather than reserving them permanently for radar operations.
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 approach enhances object recognition distance and data communication efficiency by adaptively adjusting the Golay sequence length, overcoming signal attenuation and resource allocation issues, while maintaining high precision in radar operations.
Implementation Method 1
a radar, which is a device for transmitting electromagnetic waves and capable of performing operations, such as identification or classification of the existence or absence, distance, altitude, moving direction, and moving speed of an object by reflection waves or back-scattered waves hitting and coming from the object
Implementation Method 2
estimate a predicted distance to the external object
Data Source
Figure 1~2A
Figure 2B~3A
Figure 3B~4A
AI summary
A method for adjusting the length of a Golay sequence for object recognition and an electronic device therefor are provided. The method for operating the electronic device includes estimating a predicted distance to an external object, determining, based on the estimated predicted distance, the length of a Golay sequence included in a signal for recognizing the external object, and transmitting at least one signal including a Golay sequence having the determined length, and when a device for wireless communication, included in the electronic device, is utilized to perform a radar function, the length of a Golay sequence is adjusted to enable object recognition as much as a length required according to the use of an application, such that recognition efficiency and data communication efficiency can be optimally provided.