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Centimeter level positioning new chapter UWB receiver chip UWB positioning principle

2024-12-25 83

With the rapid development of science and technology, high-precision positioning technology has become one of the key technologies in many fields. Among many high-precision positioning technologies, Ultra-Wideband (UWB) technology has gradually become the leader in the field of centimeter-level positioning with its unique advantages. This paper will focus on centimeter-level positioning UWB receiver chip and UWB positioning principle are discussed in detail, aiming to provide readers with a comprehensive and in-depth technical analysis.

UWB飛睿智能

I. Overview of UWB technology


UWB technology is a kind of wireless communication technology, which is characterized by ultra-wide signal bandwidth and short pulse width. Compared with traditional wireless communication technology, UWB technology has higher data transmission rate, lower power consumption and stronger penetration capability. These advantages make UWB technology has a wide application prospect in the fields of high-precision positioning, wireless communication, sensor network and so on.


Second, UWB positioning principle


UWB positioning technology is based on the principle of ranging, by measuring the transmission Time of the signal from the transmitting end to the receiving end (TOF) to achieve positioning. Specifically, the UWB positioning principle can be divided into the following steps:


Signal transmission: The UWB transmitter in the positioning system sends out an ultra-short pulse signal with a wide bandwidth and a short pulse width.

Signal transmission: The signal propagates in space, and the phenomena such as reflection and refraction occur when encountering obstacles, but due to the ultra-wideband characteristics of UWB signals, these phenomena have little impact on the signal.

Signal reception: After the UWB receiver in the positioning system receives the signal, it records the arrival time of the signal. By comparing the transmitting time and the receiving time, the transmission time of the signal in space can be calculated.

Distance calculation: According to the signal transmission time and signal propagation speed (usually the speed of light), the distance from the transmitting end to the receiving end of the signal can be calculated. This is known as the TOF ranging method.

Multi-point positioning: In order to achieve more accurate positioning, it is often necessary to use multiple receivers to receive signals at the same time. By measuring the distance between the terminal and each receiver, combined with the position relationship between the receivers, the principle of triangulation or other algorithms can be used to determine the exact position of the terminal.


Third, the role of UWB receiver chip in centimeter-level positioning


UWB receiver chip is one of the core components of UWB positioning system, its performance directly affects the accuracy and stability of the positioning system. In centimeter-level positioning, the role of the UWB receiver chip is mainly reflected in the following aspects:


High precision ranging: The UWB receiver chip has high time resolution and signal processing capability, and can accurately measure the transmission time of the signal from the transmitting end to the receiving end, so as to achieve high precision ranging.

Multi-channel reception: In order to achieve multi-point positioning, the UWB receiver chip needs to support multi-channel reception. This means that it must be able to process signals from multiple transmitters simultaneously and accurately record the arrival time of each signal.

Strong anti-interference ability: Due to the ultra-wideband characteristics of UWB signal, it can maintain stable transmission performance in complex electromagnetic environments. UWB receiver chip needs strong anti-interference ability to ensure accurate positioning in complex environment.

Low power design: In order to meet the demand for low power consumption in mobile devices or Internet of Things devices, the UWB receiver chip needs to adopt a low power design. This includes measures such as optimizing circuit design and reducing operating voltage and current.


4. Advantages and application scenarios of UWB positioning technology


UWB positioning technology has many advantages, such as high precision, high stability, strong anti-interference ability. This makes it have wide application prospect in many fields. The following are some typical application scenarios:


Indoor positioning: Since GPS and other satellite positioning technology can not work properly in the indoor environment, UWB positioning technology has become the ideal choice for indoor positioning. It can provide accurate indoor location services for shopping malls, museums, airports and other public places.

Intelligent manufacturing: In the field of intelligent manufacturing, UWB positioning technology can be used to achieve accurate tracking and management of equipment, materials and personnel, improve production efficiency and reduce costs.

Autonomous driving: In the field of autonomous driving, UWB positioning technology can be integrated with other sensors such as lidar and cameras to provide vehicles with more accurate location information to ensure safe driving.

Internet of Things application: UWB positioning technology can also be applied to the field of Internet of Things, such as smart home, smart medical and other scenarios, to provide people with a more convenient and intelligent life experience.


V. Conclusion


With its advantages of high precision, high stability and strong anti-interference ability, UWB positioning technology has shown great potential in the field of centimeter-level positioning. With the continuous progress of technology and the continuous expansion of application scenarios, UWB positioning technology will play a more important role in the future.


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