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Simple method for generating reflecting surface cable net of cable net antenna

A cable-net antenna and reflective surface technology, applied to antennas, electrical components, etc., can solve the problem of cumbersome generation methods, achieve the effects of simple and reliable generation process, avoid the setting of empirical parameters, and be easy to program.

Active Publication Date: 2018-09-28
DALIAN UNIV OF TECH
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Problems solved by technology

However, the existing grid generation methods based on geodesics are relatively cumbersome, and the generated grids are all quasi-geodesics

Method used

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  • Simple method for generating reflecting surface cable net of cable net antenna
  • Simple method for generating reflecting surface cable net of cable net antenna
  • Simple method for generating reflecting surface cable net of cable net antenna

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Embodiment

[0068] A reflective surface with diameter D=10m and focal length f=5m is selected as an implementation example, the main cable is divided into 10 sections, and the quasi-geodesic method and the method proposed by the present invention are used to generate the reflective surface cable network, as Figure 6 with Figure 7 shown. Table 1 shows the parameters of the cable net generated by the two methods. Compared with the two methods, the cable net generated by the present invention is no matter in the total cable length of the grid, the uniformity of the cable unit or the accuracy of the reflection surface δ rms In terms of parameters, it is better than the quasi-geodetic method in the literature. In addition, the method proposed by the present invention does not need complex geometric relationship derivation, and the generating process is simpler.

[0069] Table 1 Comparison of generated cable network parameters

[0070]

[0071] Note: Quasi-geodetic method references (Sh...

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Abstract

The invention discloses a simple method for generating a reflecting surface cable net of a cable net antenna, which comprises the following steps: generating a reference spherical surface; dividing the reference spherical surface into six identical sub curved surfaces; taking one of the sub curved surfaces; equally dividing two main cables on the two sides of the sub curved surface at a uniform angle; generating an initial coordinate formula of a group of cable net nodes; according to the difference between each cable unit length and the length ls of a standard cable unit, generating a displacement matrix of free node coordinate correction, and then generating a corrected node coordinate of the free node, obtaining a corrected sub curved surface cable net and the total cable length of thesub curved surface cable net, determining the difference between the total cable length of the sub curved surface for the first time and that for the second time; enabling the difference between the total cable length of the net for the former time and that for the last time to be less than a convergence threshold through multiple iteration corrections; and rotating the obtained sub curved surfacenet by an angle of phi / 3 around the central axis of the paraboloid of revolution to generate the entire reflecting surface cable net. Compared with the common projection method and geodesic method, the length of the reflecting surface cable net unit generated through the simple method in the invention is more uniform, especially in the case that the focal length-caliber is relatively small.

Description

technical field [0001] The invention relates to the technical field of cable-net antenna design, in particular to a simple method for generating a cable-net geometric configuration of a cable-net antenna reflection surface through iteration of node coordinates in combination with the characteristics of an equilateral triangle. Background technique [0002] In recent years, earth observation satellites, communication satellites, and deep space exploration spacecraft have put forward higher and higher requirements for antenna gain and signal receiving capabilities. Large-aperture and high-precision antennas have become one of the main development directions of spaceborne antennas. Due to the limitation of the carrying capacity and loading space of the launch vehicle, the traditional solid-surface antenna can no longer meet the design requirements. Expandable antennas have become an effective form of large-diameter antennas under the current rocket carrying capacity. The main t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/14H01Q15/16
CPCH01Q15/141H01Q15/16
Inventor 寻广彬谭述君李依龙吴志刚兰澜
Owner DALIAN UNIV OF TECH
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