Spatial directional angle measuring system based on all-optical cross polarization modulation
A technology of polarization modulation and space direction, which is applied in the field of microwave photonics, can solve problems such as the difficulty of quickly identifying the direction and position information of antenna signals, and achieve the effects of low power consumption, strong compatibility, and simple structure
Active Publication Date: 2015-04-01
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF2 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to provide a spatial orientation angle measurement system based on all-optical cross-polarization modulation, which can solve the difficult problem of quickly identifying the direction and position information of antenna signals in optically controlled phase-controlled radars, and can be based on all-optical cross-polarization modulation. The Modulation Method Realizes the Preliminary Measurement of Antenna Spatial Direction Angle
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] see figure 1 As shown, the present invention provides a kind of spatial orientation angle measurement system based on all-optical cross polarization modulation effect, comprising:
[0029] A first laser source 1, which is used to output a single-mode narrow-linewidth laser source;
[0030] A first Mach-Zehnder intensity modulator 2, the input port 1 of which is connected to the output end of the first laser source 1, for photoelectric modulation of the first laser source 1;
[0031] A polarization controller 3, the input end of which is connected to the output end of the first Mach-Zehnder intensity modulator 2, for controlling the polarization state of the optical signal output by the first Mach-Zehnder intensity modulator 2;
[0032] A second laser source 4, used to output a single-mode narrow-linewidth laser source, and the greater the difference between its output wavelength and the output wavelength of the first laser source 1, the better;
[0033] The two laser ...
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
Login to View More Abstract
The invention discloses a spatial directional angle measuring system based on all-optical cross polarization modulation. The spatial directional angle measuring system comprises a first mach-zehnder intensity modulator, a polarization controller, a second mach-zehnder intensity modulator, a polarization controller I, an electric coupler, a microwave phase shifter, a polarization controller II, an optical fiber online polarizer, an optical band pass filter, a photoelectric detector, an offset T and a voltmeter, wherein the first mach-zehnder intensity modulator and the polarization controller are connected with a first laser light source; the second mach-zehnder intensity modulator and the polarization controller I are connected with a second laser light source; the electric coupler and the microwave phase shifter are connected with a microwave signal source; the polarization controller III, the optical fiber online polarizer, the optical band pass filter, the photoelectric detector, the offset T and the voltmeter are sequentially connected with the optical coupler. The spatial directional angle measuring system based on all-optical cross polarization modulation can be used for solving the problem of difficulty in quickly identifying antenna signal directional position information in an optically controlled phased array radar, and can be used for realizing primary measurement of an antenna spatial directional angle based on an all-optical cross polarization modulation method.
Description
technical field [0001] The invention belongs to the field of microwave photonics, and more specifically relates to a space orientation angle measurement system based on all-optical cross-polarization modulation. Background technique [0002] Since the 1980s, with the development of light-borne microwave signal modulation technology and semiconductor optoelectronic technology, researchers' idea of applying optical transmission system to optical control phase control radar system has been developed rapidly. Because the frequency of the optical carrier is extremely high, and the optical line has the advantages of stable transmission, the microwave bandwidth is very small compared with the frequency of the optical carrier. In the optical control radar system, researchers are eager to apply the advantages of optical bandwidth to microwave to the maximum extent. The field of signal transmission. Therefore, it is of great significance to study all-optical microwave signal transm...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14G01S3/12
CPCG01S3/78
Inventor 孙文惠李伟王文亭王玮钰佟有万刘建国祝宁华袁海庆
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI