In recent years, with the construction of the Beidou Navigation System and the National Beidou Ground based Augmentation System, high-precision positioning technology has been increasingly applied in the railway and transportation industries. At the same time, due to the wide selection of industry law enforcement terminals and non-standard data accuracy, there are certain difficulties in obtaining evidence for lane level illegal activities, mainly reflected in the following two aspects:

1. Difficulty in data collection:

Due to the accuracy of traditional GNSS positioning technology being around 5-10 meters, it is impossible to determine lane level behavior.

2. Difficulty in on-site restoration:

It is difficult to restore the temporal and spatial location before and after traffic and railway accidents, and experienced personnel are required for manual identification, personnel evacuation, and on-site evidence collection, making it difficult to complete the work remotely in the cloud. Therefore, precise supervision and identification of personnel and vehicle behavior at the lane level is the key to addressing the difficulties in law enforcement and evidence collection in traffic management.

Technological innovation to solve law enforcement challenges

In response to this, Qingdao Hisense Communication Co., Ltd. has started with high-precision positioning technology, set up a dual frequency Beidou+dual frequency GPS+dual frequency Galileo positioning strategy, and implanted dual frequency Beidou positioning chips in multiple devices. It has specially designed law enforcement and evidence collection terminals with lane level positioning capabilities for industries such as transportation and railway. Its advantages lie in stronger anti-interference ability, higher positioning accuracy, and shorter positioning time.

How accurate is precise positioning?

Firstly, we need to understand the classification of positioning technology on mobile law enforcement terminals. Among them, high-precision Beidou/GPS positioning relies on wide area real-time precision positioning technology, and through the Beidou ground-based enhanced network system established globally/nationally, the satellite positioning accuracy is improved from an average of about 4-20 meters to a sub meter level for mass application.

What does positioning within 1 meter represent? It refers to ensuring that 50% of the positioning points have an accuracy within 1 meter.

Horizontal positioning accuracy:<1 meter CEP

ü   Note: CEP, 50%, 24-hour static, with more than 6 satellites and a signal strength of -130dBm

In order to better demonstrate the precise accuracy of Hisense law enforcement terminals, Hisense Communication Testing Department used UFO-U5 centimeter level RTK surveying equipment to conduct multiple experiments to verify lane level violations in the transportation and railway industries, and analyzed and processed the test results. Relying on multi frequency reception and Beidou-3 system, Hisense law enforcement terminals have achieved accurate positioning, supporting almost all civil frequency bands of positioning systems.

Accurate positioning and actual testing, comparing to gain true knowledge

How accurate is the positioning of Hisense law enforcement terminals? Comparison of in car dynamic testing reveals true knowledge

           Effect picture of Hisense high-precision positioning law enforcement terminal                 Rendering of other law enforcement terminals and mobile phone related positioning trajectories

Compared with other law enforcement terminals and mobile phones, the positioning effect of Hisense dual frequency positioning law enforcement recorder is significantly better than other products, and there is no serious drift throughout the entire process.

Crafted with ingenuity and intelligence, a good helper for law enforcement

Hisense positioning law enforcement and evidence collection terminal uses wide area real-time precision positioning technology to obtain real-time and accurate spatiotemporal data, matching high-precision trajectories with command and dispatch maps, providing guarantees for applications in industries such as public security, railway, municipal, transportation, and security. In the future, Hisense will also adhere to technological innovation and provide more high-quality product experiences for various industries.