Method of Improving Direction Finding Accuracy of Millimeter Wave Signals without Frequency Information Based on Partition Direction Finding
A millimeter-wave, frequency-free technology, which is applied to the orientation device for measuring the direction, the direction finder using radio waves, and the measuring device, etc., can solve the difficulties, the millimeter-wave loss attenuation propagation characteristics, and the difficulty in meeting the millimeter-wave frequency domain direction finding Accuracy requirements and other issues to achieve the effect of improving direction finding accuracy
Active Publication Date: 2022-07-15
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology
[0003] In practical applications, due to the propagation characteristics of millimeter waves that are prone to loss and attenuation during propagation, the direction finding work for millimeter wave signals has become increasingly difficult
It is very difficult for the current lateral system to accurately measure millimeter wave frequency. At present, the general system does not have accurate frequency information for millimeter wave signal detection, which leads to the use of only a single frequency point for millimeter wave signal direction finding without frequency information. Even if the number of channels of the extended ratio is not enough to ensure the direction finding accuracy, it is difficult to meet the direction finding accuracy requirements in the millimeter wave frequency domain
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[0035] Aiming at the phenomenon that the existing millimeter wave direction finding method has relatively large errors and the direction finding result is not accurate enough, this embodiment discloses a method for improving the millimeter wave direction finding accuracy, which will now be described.
[0036] Specifically, as figure 1 , figure 2 As shown, the direction finding method disclosed in this embodiment is as follows:
[0037] A method for improving the direction finding accuracy of a millimeter-wave signal without frequency information based on the direction finding of partitions, including:
[0038] S01: Set several frequency bands according to the frequency band, select several frequency points from the millimeter wave to be tested that fall into the frequency band interval, and ensure that there is at least one frequency point in each frequency band interval.
[0039] In this embodiment, the frequency band interval is divided into five, and the five frequency b...
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The present invention relates to the technical field of millimeter wave electronics, in particular to a method for improving direction finding accuracy of a millimeter wave signal without frequency information based on direction finding by division. Frequency points, and ensure that there is at least one frequency point in each frequency band interval; generate the corresponding antenna pattern and corresponding direction finding table according to the selected frequency points; define the direction finding interval in each frequency band interval, and read The corresponding direction-finding meter calculates the millimeter-wave frequency point to be measured to obtain the direction-finding angle. The present invention determines a direction finding table correspondingly by dividing a plurality of frequency band intervals; the millimeter wave also divides the frequency points to be measured into the direction finding interval according to the frequency band, and the frequency points of the millimeter wave to be measured can correspond to the direction finding interval, using each The corresponding direction-finding meter determined in each frequency band interval measures the azimuth angle of the frequency points in the direction-finding interval, avoiding the problem of large direction-finding errors due to the gap in frequency bands, and finally improving the direction-finding accuracy of millimeter waves.
Description
technical field [0001] The invention relates to the technical field of millimeter wave electronics, in particular to a method for improving the direction finding accuracy of a millimeter wave signal without frequency information based on zone direction finding. Background technique [0002] With the rapid development of millimeter wave technology and the increasingly complex space electromagnetic environment, millimeter wave technology is widely used in military and commercial products, especially in the fields of communication, radar, remote sensing and radio astronomy. Because the wavelength of the millimeter wave signal is very short, the millimeter wave signal is attenuated, scattered, changed polarization and propagation path due to the absorption of molecules in the atmosphere, the influence of precipitation, the influence of atmospheric suspended matter, and the influence of ground obstacles during the propagation process. . [0003] In practical applications, due to...
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IPC IPC(8): G01S3/14G01S3/28
CPCG01S3/143G01S3/28
Inventor 闫思瑞李钊任锋张宴龙
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP