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Method for target positioning via MISO (Multiple Input and Single Output) radio system

A radio system and target positioning technology, which is applied in the field of high-precision target positioning of multiple-input single-output system radio signals, and achieves the effects of small calculation amount, improved positioning accuracy and simple principle.

Active Publication Date: 2015-12-16
SICHUAN HONGCHUANG ELECTRONICS TECH
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Problems solved by technology

[0004] In order to solve the defect that the prior art requires prior knowledge to quickly locate moving targets in the air, the present invention provides a method for target positioning using a multiple-input single-output radio system, aiming at transmitting stations with large arrays fixed on the ground and only A receiving station with a single antenna for the location of moving objects in the air

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  • Method for target positioning via MISO (Multiple Input and Single Output) radio system

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specific Embodiment approach

[0027] like figure 2 As shown, in this embodiment, five transmitters are used as the current transmitters, and the serial numbers are 1, 2, 3, 4, and 5 respectively. The transmitter with the default serial number 1 is the reference transmitter, and the distances between transmitters 2, 3, 4, and 5 relative to transmitter 1 are 0.75 meters, 1.5 meters, 2.25 meters, and 3 meters, respectively. Each transmitter transmits the same frequency non-coherent signal and the frequency of the transmitted signal is 200MHz. The sampling period of the time-domain sampling is 2.5 nanoseconds, the signal-to-noise ratio is 5dB, and the sampling length is 128.

[0028] like figure 2 As shown, the initial position of the target (t=0 moment) is located on the right side of the normal at the midpoint of the transmitting array, and the azimuth angle of the target relative to the transmitting array is set as α=30° and the distance of the target relative to the transmitting array (Taking No. 3 tr...

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Abstract

The invention belongs to the technical field of electronic information, and relates to a high-precision target positioning method for radio signals of an MISO system by combining the time difference range finding technology in the target positioning technology. According to the method for target positioning via the MISO radio system, two or more radio transmitters are used to transmit non-coherent signals, a radio receiver is used to receive reflection echoes of a target to determine the azimuth of the target, the time difference that the signals pass the transmitters, the target and the receiver is measured to determine the distance of the target, and the azimuth and the distance of the target serve as the estimated position of the target to position the target rapidly. No prior knowledge is needed when the moving target is positioned in the method, and thus, the practicality is higher.

Description

technical field [0001] The invention belongs to the field of electronic information technology, and in particular relates to a multiple input single output system (multiple input single output, MISO) radio signal high-precision target positioning method of a combined time difference ranging technology in the target positioning technology. Background technique [0002] MISO radio systems are multi-antenna arrays that radiate incoherent waveforms at the transmitter and a single antenna at the receiver. In many practical applications, it is necessary to allow some small motion platforms (UAVs, guided weapons, etc.) to locate the target. However, these platforms are often small in size, unable to place large-aperture antenna arrays, and some can only place a single antenna, which greatly limits the ability of small motion platforms to locate targets. [0003] The patent application No. 201310385863.0 discloses a method for determining the target azimuth and distance by using th...

Claims

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Application Information

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IPC IPC(8): G01S13/46
CPCG01S13/46G01S2013/462
Inventor 万群刘江波胡泽鹏殷吉昊邹麟
Owner SICHUAN HONGCHUANG ELECTRONICS TECH
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