Distance measurement method and receiving equipment

Abstract

The invention discloses a distance measurement method and receiving equipment. The distance measurement method comprises the steps of receiving a first multi-carrier signal sent by first transmitting equipment, wherein the first multi-carrier signal comprises N subcarriers; determining M subcarriers in the N subcarriers according to pre-stored subcarrier selection parameters; determining a phase difference sequence of the first multi-carrier signal according the phase and phase difference sequence generation rules of the M subcarriers; and determining the transmission distance of the first multi-carrier signal according to a mapping relation between the phase difference sequence and the transmission distance. Adoption of the embodiment of the invention is conducive to improving the distance measurement convenience of the receiving equipment and reducing capability requirements of an OFDM multi-carrier system for the receiving equipment.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of ranging, and in particular, to a ranging method and a receiving device. Background technique [0002] At present, positioning is a relatively popular application field, for example, it can be used to perform indoor navigation and object tracking for users, among which positioning by distance measurement is a mainstream positioning method. [0003] In the existing ranging scheme, usually the transmitting device sends a positioning signal to the receiving device, and the receiving device sends the signal as it is within the specified time after receiving the positioning signal; and the transmitting device switches quickly after sending the positioning signal Receive state, receive the signal reflected from the other party, compare the received reflected signal with the sent signal, perform correlation and other operations, and obtain the time difference between the two signals, whi...

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Problems solved by technology

[0004] The inventor of this technical solution found in the research process that the above-mentioned ranging solution requires the receiving device to have the ability to reflect signals, and the transmitting device is required to have the ability to receive signals in a very short time, the operation process is complicated, and the equipment capability requirements are high.

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