Unlock instant, AI-driven research and patent intelligence for your innovation.

Aircraft positioning system and positioning method

A positioning system and aircraft technology, applied in the field of visible light communication, can solve problems such as difficulty in providing stable and accurate positioning services, affecting positioning requirements, error accumulation, etc., to achieve the effect of eliminating accumulated errors, real-time positioning tracking, and improving positioning accuracy.

Inactive Publication Date: 2017-10-20
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI +1
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, aircraft positioning systems or methods include inertial navigation systems and GPS navigation systems. Inertial navigation systems have high short-term accuracy, can continuously output position, speed, attitude information, and are completely autonomous. However, it also has its own The insurmountable shortcoming, that is, the error will accumulate over time, which seriously affects its long-term positioning requirements
Although the GPS positioning system has strong anti-interference ability, it is difficult to provide stable and accurate positioning services in some complex environments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aircraft positioning system and positioning method
  • Aircraft positioning system and positioning method
  • Aircraft positioning system and positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] Such as image 3 As shown, this embodiment proposes an aircraft positioning system, including an optical signal transmitting device 10 , an optical signal capturing device 20 and a control device 30 . The aircraft in this embodiment is represented by unmanned aerial vehicles.

[0115] Wherein, the optical signal emitting device 10 includes a reference optical emitting unit 110 and a scanning optical emitting unit 120, the optical signal capturing device 20 includes an optical signal capturing unit 210 and a transmitting unit 220, and the control device 30 includes a central control unit 310, a receiving unit 320 and a timer Unit 330.

[0116] Further, the reference light emitting unit 110 includes an LED light source 111, a first modulation circuit 112 and a first driving circuit 113; under the control of the control device 30, the reference light emitting unit 110 drives the LED light source 111 to emit light as The LED light of the reference light, in which the firs...

Embodiment 2

[0129] Such as Figure 5 As shown, this embodiment proposes a VLC-based UAV positioning system, which mainly includes three parts: positioning light source emission, light-seeking module and control terminal. The positioning light emitting part includes a spherical LED light emitting unit and two laser scanning positioning units; the light seeking and positioning part is erected at the end of the drone, including an optical signal capture unit and a wireless communication unit, where the optical signal capture unit is installed on the drone Bottom; the control terminal includes a wireless communication unit and a time counter unit. The laser scanning positioning unit includes a control drive platform and a linear laser emitting device. The LED light source is erected at a certain point in the space and emits modulated spherical light. Two sets of control and drive platforms are set up within a certain distance, mainly including the main control circuit, a set of stepping mot...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an aircraft positioning system and positioning method. The system comprises a light signal emission device, wherein the light signal emission device comprises a scanning signal emission unit, a light signal capture device and a control device, the scanning signal emission unit comprises two linear laser sources which rotate 360 DEG at an angular velocity omega, are arranged at different positions and are respectively used for emitting first scanning light having a first modulation signal and second scanning light having a second modulation signal, the light signal capture device is arranged on an aircraft and is respectively used for capturing the first scanning light and the second scanning light, respectively demodulating the first modulation signal and the second modulation signal and sending the signals to the control device, the control device is used for sending a control signal to the scanning light emission unit to control the scanning light emission unit for emitting the first scanning light and the second scanning light and further recording the sending time t0 and is further user for recording the reception time t1 of the first modulation signal and the reception time t2 of the second modulation signal, and aircraft positioning is accomplished by the control device according to the angular velocity omega, the time t0, t1, and t2. The system is advantaged in that precise aircraft positioning can be realized.

Description

technical field [0001] The invention belongs to the technical field of visible light communication, and more particularly relates to an aircraft positioning system and a positioning method thereof. Background technique [0002] With the continuous development of science and technology, LED is gradually replacing other lighting sources due to its advantages of energy saving and high luminous efficiency, and has become the mainstream lighting source on the market. At the same time, laser has excellent temporal coherence and spatial coherence. It is similar to radio waves, easy to modulate, and the frequency of light waves is extremely high, and the capacity to transmit information is large. In addition, the divergence angle of laser beams is small, and the light energy Highly concentrated, it can not only transmit over a long distance, but also easy to keep secret. The high-speed modulation characteristics of LEDs and lasers make them applicable to communication technology, f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S5/16H04B10/50
CPCG01S5/16H04B10/503H04B10/504
Inventor 尹方元施安存乔磊曹家胜王一航
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI