Non-fixed frequency pulse signal low-cost high-precision direction finding method

A technology of high-precision direction finding and frequency pulse, which is applied to the orientation device, measuring device, radio wave measuring system and other directions of measuring direction, can solve the problems of low accuracy and complicated cost of the direction finding method, and achieve the advantages of miniaturization and The effect of system integration, low development cost and simple equipment

Pending Publication Date: 2021-03-02
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, a non-fixed frequency pulse signal low-cost and high-precision direction finding method provided by the present invention solves the problems of low accuracy, complexity and high cost of the existing direction finding method

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  • Non-fixed frequency pulse signal low-cost high-precision direction finding method
  • Non-fixed frequency pulse signal low-cost high-precision direction finding method
  • Non-fixed frequency pulse signal low-cost high-precision direction finding method

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Embodiment Construction

[0032] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0033] Such as figure 1 As shown, a non-fixed frequency pulse signal low-cost high-precision direction finding method includes the following steps:

[0034] S1, according to the wavelength range of the radiation source pulse signal (λ min ,λ max ), the azimuth angle range of direction finding is (θ min ,θ max ), calculate the lower limit of the baseline length; the formula for calculating the lower limit of the baseline...

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Abstract

The invention discloses a non-fixed frequency pulse signal low-cost high-precision direction finding method. The method comprises the following steps: S1, calculating a lower limit of a baseline length according to a wavelength of a radiation source pulse signal and a direction finding azimuth angle; S2, calculating the unambiguous phase difference of two channel signals in the dual-channel receiver, and calculating the upper limit of the baseline length according to the unambiguous phase difference; and S3, calculating the azimuth angle of the target based on the baseline length, the frequency measurement values and the phase difference measurement values of the signal in different time periods. The method is high in direction finding precision and good in system performance; equipment issimple and light, and miniaturization and system integration are facilitated; and the development cost is low, and the engineering realizability is high.

Description

technical field [0001] The invention relates to the technical field of electronic information direction finding, in particular to a low-cost and high-precision direction finding method of non-fixed frequency pulse signals. Background technique [0002] To measure the angle of arrival of non-coordinated pulse signals, there are usually three methods: amplitude ratio direction finding, lens multi-beam and interferometer direction finding. Their advantages and disadvantages are compared as shown in Table 1. It can be seen from Table 1 that in order to achieve high-precision direction finding, multi-baseline interferometer direction finding technology is usually used. [0003] Table 1 Comparison of advantages and disadvantages of commonly used direction finding technologies [0004] [0005] In a certain observation area, in order to meet the high-precision direction finding of the radiation source pulse signal, it is generally required to increase the baseline length of the...

Claims

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Application Information

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IPC IPC(8): G01S3/48
CPCG01S3/48
Inventor 王智显黄光明龚军涛刘兰陈晨张爱洲高峰缪方雷白华
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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