Needless to say, everyone should also know that these are the three functions of the "three in one GPS navigator". Add a mobile speed measurement function on top of map navigation and fixed point warning. It is necessary to explain to everyone what flow velocity measurement is. Mobile speed measurement is relative to fixed point speed measurement. As the name suggests, mobile speed measurement equipment can be "mobile", such as radar speed guns, speed vehicles, movable radar speed measurement points, etc. in the hands of traffic police. For fixed speed measurement, we can upload fixed point information to the databases of various manufacturers by manually collecting coordinates. However, flow velocity measurement cannot be achieved through this method.

　　Flow velocity measurement is achieved by integrating radar modules to counter detect radar waves emitted by various flow velocity instruments. The navigator clearly does not have an integrated radar module. So we need another way to add mobile speed measurement function to GPS: to equip the navigator with speed measurement radar. There are various types of speed measurement radars on the market. Taking the most famous Shanling X7 as an example, we connect the Shanling X7 with the navigation system we purchased through corresponding interfaces, and then integrate and add mobile speed measurement functions through DSA software, which is very simple.

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