Beidou chip is the core component for realizing the positioning function of single beidou positioning law enforcement recorder. Its selection is directly related to the positioning accuracy, which in turn affects the accuracy and effectiveness of law enforcement work. Different Beidou chips differ in performance, technical architecture, etc., and these differences will be reflected in the positioning accuracy.
Beidou chips that support multiple frequencies usually have higher positioning accuracy. For example, the BG1101BD chip of Qianxun Positioning can process the signals of three Beidou frequencies at the same time. Multi-frequency signals can effectively weaken errors such as ionospheric delay through mutual calibration and fusion processing, improve positioning accuracy, and achieve centimeter-level positioning. Single-frequency chips are relatively weak in anti-interference and accuracy improvement. For example, some ordinary Beidou chips that only support single frequency may only have positioning accuracy of meters.
Advanced positioning algorithms are the key to high-precision positioning. Some high-end Beidou chips have built-in high-precision positioning algorithms, such as the BG1101BD chip of Qianxun Positioning, which has built-in single Beidou high-precision RTK positioning algorithm and DR combined navigation algorithm. These algorithms can process and analyze satellite signals more accurately. Combined with real-time dynamic differential technology, they can quickly and accurately calculate location information in complex environments, greatly improving positioning accuracy and positioning time. In contrast, chips that lack advanced algorithms will have a greater impact on positioning accuracy, especially in environments with strong signal obstruction or interference.
Chips that can track more satellites help improve positioning accuracy. Some high-performance Beidou chips can track multiple Beidou satellites at the same time. For example, Tiangong Measurement and Control's SKG1223 module can track 40 satellites at the same time. Tracking more satellites means that the chip can obtain richer location information and improve positioning accuracy and reliability through redundant data. For chips that track a limited number of satellites, positioning accuracy may drop significantly when encountering situations such as satellite signal obstruction.
Chips with advanced architectures such as RF baseband integrated design help improve positioning accuracy. This design can reduce loss and interference during signal transmission and improve the efficiency and accuracy of signal processing. For example, the BG1101BD chip uses an RF baseband integrated design, which effectively reduces power consumption while improving positioning performance. In addition, some chips also integrate special anti-interference modules or adopt better circuit design, which can maintain stable signal reception and processing capabilities in complex electromagnetic environments, thereby ensuring positioning accuracy.
Domestically developed Beidou chips have customization advantages. Taking the Dingjian domestic chip single Beidou law enforcement recorder as an example, the domestic chips it uses can be customized and optimized according to the actual needs of the law enforcement recorder to better meet the positioning accuracy requirements of special scenarios such as railway safety monitoring. This customization can accurately optimize the performance of the chip for specific environments and application requirements, thereby achieving higher positioning accuracy in actual applications.
The selection of Beidou chips affects the positioning accuracy of single Beidou positioning law enforcement recorder from multiple aspects such as frequency support, algorithm optimization, satellite tracking capability, hardware architecture design and customization. Choosing Beidou chips that support multiple frequency points, built-in advanced algorithms, have strong satellite tracking capabilities, use advanced hardware architecture and are customizable can significantly improve the positioning accuracy of law enforcement recorders, provide more accurate and reliable location information support for law enforcement work, and help improve law enforcement efficiency and quality.
