About ranging

Ranging method

Symmetric double-sided two-way ranging (SDSTWR)

The error of this ranging method mainly depends on the following factors:

1. Clock error of equipment A and B;

2, the average delay time of equipment processing;

Typical ranging scenario

In many common cases, it is necessary to apply to wireless precision ranging, here mainly point to point ranging, point to multi-point

ranging, space free ranging three modes to meet different applications in various scenarios.

Point-to-multipoint ranging

Mainly used in the ranging between two devices, this ranging is the most simple, ranging accuracy is better, convenience is strong.

Because distance measurement is the most basic function, it can be based on distance measurement for secondary deep integration.

A typical application is that, for example, a car in operation needs to know its precise position, which can be completed by ranging;

When prisoners are on parole for medical treatment, prison guards can use accurate distance measurement to control prisoners within

a safe distance, and management personnel can also use the platform to ensure that there is no favoritism. Accurate ranging between

the drone and the drone can be followed by shooting; With UWB, tour groups can control the distance between each person and the

guide, ensuring that no one gets lost.

Space free ranging

Space free ranging is a special ranging mode, mainly because all the targets are in a state of motion in space, and the equipment

needs to know who is around before each ranging. In the case of more ranging targets, it is necessary to do a good job of distribution

to avoid mutual interference between them, and ultimately can not be ranging.

Space free ranging is mainly used for the following two objectives:

1. The formation of spatial network, such as UAV formation, can be based on the spatial distance between all targets to form AD

hoc network. In the absence of GNSS system, UWB can be used to form the position network of spatial formation;

If this system is applied in Mesh network of wireless communication, it can also provide distance parameters as decision-making

means for Mesh.

2. Collision avoidance, such as maintenance locomotives walking on train tracks, can form another kind of protection based on

this dynamic ranging.