Frequency modulation (FM) broadcast-based terminal positioning method and special positioning device

Abstract

The invention provides a frequency modulation (FM) broadcast-based terminal positioning method, which can overcome the defect of the conventional mobile positioning technology and is low in cost, stable and reliable, and high in precision and cruising capability. The method comprises the following steps that: 1, a positioning device sequentially receives broadcast signals at all frequency points in the frequency band specified by FM broadcast, and records the frequency points receiving the broadcast and signal reception strength values so as to obtain a group of broadcast signal strength values transmitted by a plurality of broadcast transmitting stations; 2, the positioning device obtains the geographical positions and the transmitting power information of the broadcast transmitting stations received by the recorded frequency points through the group of broadcast signal strength values which are transmitted by the plurality of broadcast transmitting stations and obtained in the step 1; and 3, the positioning device calculates the position of the terminal to be tested according to the broadcast reception strength values of the frequency points, the FM broadcast frequency, the transmitting power information and the geographical positions of the broadcast transmitting stations. The invention also provides a special positioning device, which comprises a processor unit, an FM broadcast reception module and a storage module, wherein the processor unit and the FM broadcast reception module as well as the storage module are respectively electrically connected through a bus.

Description

A terminal positioning method and special positioning device based on FM broadcasting technical field The invention belongs to the field of mobile communication, and in particular relates to a terminal positioning method and a terminal positioning device, in particular to a terminal positioning method and a dedicated positioning device based on FM broadcasting. Background technique Mobile positioning technology has more and more popular applications in many fields such as transportation, life services, production safety and security. In the transportation industry, vehicle-mounted mobile positioning terminals are used for positioning and track monitoring of target vehicles, realizing functions such as tracking of stolen vehicles, tracking and scheduling of logistics and transportation, and monitoring and early warning of traffic flow; in the life service industry, handheld mobile positioning terminals The terminal submits the location information to the information retriev...

AI Technical Summary

Problems solved by technology

Although the positioning accuracy of GPS-based wireless positioning technology is high, it has shortcomings in cost, power consumption, safety and stability: GPS chips are expensive and consume a lot of power, so they are not suitable for mass deployment; The safety will not be guaranteed; the GPS positioning accuracy is also greatly affected by the environment where the terminal is located. For example, when the user is indoors or between tall buildings, the positioning accuracy will decrease due to the small number of GPS satellites that can be tracked. reduced, or even unable to complete the positioning

To sum up, on the one hand, with the development of commercial wireless positioning services, users have increasingly higher requirements for positioning accuracy; on the other hand, there are various defects in the existing wireless positioning technology.

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