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Composite feed source parabolic cylinder antenna and detection satellite

A technology of parabolic cylinder and feed source, applied in the direction of antenna, antenna, antenna coupling, etc. suitable for movable objects, can solve the problem of paying more cost and weight resources, increasing uncertain factors, and affecting the detection accuracy of microwave detectors and other issues to achieve the effect of reducing electromagnetic wave interference, simplifying the structure, and improving stability

Active Publication Date: 2020-05-12
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to meet the beam requirements of active and passive microwave detection at the same time, the existing technology independently designs matching antennas. The antennas designed by this method are highly targeted, but the total weight and volume of the antennas need to be calculated with two antennas, especially for large reflectors. Plane antenna, independent design of active and passive antenna requires more cost and weight resources
In addition, the use of an antenna for the active and passive will increase the uncertainty of the data fusion of the active and passive, which will affect the detection accuracy of the microwave detector.

Method used

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  • Composite feed source parabolic cylinder antenna and detection satellite
  • Composite feed source parabolic cylinder antenna and detection satellite
  • Composite feed source parabolic cylinder antenna and detection satellite

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Embodiment 1

[0026] see figure 1 and figure 2 , the present invention provides a compound feed parabolic antenna, comprising: an offset parabolic antenna 1, a compound feed array 2, a parabolic support 3, and the parabolic support 3 is used to support the offset parabolic Cylindrical antenna 1, composite feed array 2 includes phased array feed 201, sparse feed array 202 and feed mounting plate 203, phased array feed 201 and sparse feed array 202 are arranged on feed mounting plate 203 ;in,

[0027] The phase center of each feed source in the sparse feed source array 202 is set on the focal line of the offset parabolic antenna 1, the array direction of the phased array feed source 201 is parallel to the focal line and is set off-focus, the phased array feed source 201 The feed port face of the sparse feed array 202 is flush with the feed port face of the sparse feed array 202 .

[0028] The present embodiment is described in detail now:

[0029] According to the technical solution prov...

Embodiment 2

[0040] see figure 1 , the present application provides a detection satellite based on Embodiment 1, including a star, and a compound feed parabolic antenna based on Embodiment 1.

[0041] The offset parabolic antenna 1 is fixed on the star through the parabolic support 3, and the composite feed array 2 is installed on the feed installation plate 203, and the feed installation plate 203 is installed on the star. The active phased array feed 201 irradiates the reflective surface of the biased parabolic antenna 1 to form a one-dimensional scannable high-gain narrow beam, and each sparse feed can form multiple ellipses with the same direction and similar shape after being reflected by the parabolic cylinder beam.

[0042] Based on the compound feed parabolic cylinder antenna of embodiment 1, the detection satellite of this embodiment utilizes the characteristics of one-dimensional focusing and one-dimensional plane reflection of electromagnetic waves by the parabolic cylinder ant...

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Abstract

The invention discloses a composite feed source parabolic cylinder antenna and a detection satellite. Wherein the composite feed source parabolic cylinder antenna comprises a bias parabolic cylinder antenna, a composite feed source array and a parabolic cylinder supporting part; the parabolic cylinder supporting part is used for supporting the bias parabolic cylinder antenna, the composite feed source array comprises a phased array feed source, a sparse feed source array and a feed source mounting plate, and the phased array feed source and the sparse feed source array are arranged on the feedsource mounting plate; the phase center of each feed source in the sparse feed source array is arranged on a focal line of the offset parabolic cylinder antenna, the array direction of the phased array feed source is parallel to the focal line and is arranged in an offset-focus manner, and the feed source aperture surface of the phased array feed source is aligned with the feed source aperture surface of the sparse feed source array. By adopting the double-row feed source array and sharing the parabolic cylinder antenna, a one-dimensional scannable high-gain narrow wave beam and a plurality of elliptical wave beams which are consistent in direction and similar in shape can be formed, the integrated design of the antenna is realized, and the antenna has the technical characteristics of light weight, low cost and high detection precision.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a compound feed parabolic cylinder antenna and a detection satellite. Background technique [0002] In the field of microwave detector technology, active and passive remote sensing joint observation can downscale the passive microwave brightness temperature or the data obtained by inversion by active observation, which can realize high-resolution and high-precision microwave detection. One of the key technologies of observation. [0003] The active detection adopts the synthetic aperture radar system. In order to ensure a certain width in the distance direction, the antenna beam needs to cover a certain range with high gain. At the same time, considering the resolution requirements, the beam needs to be converged in the azimuth direction, and the antenna needs to generate a one-dimensional sweepable height. Gain narrow beam. Passive detection adopts one-dimensional synthetic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/12H01Q1/28H01Q1/50H01Q1/52H01Q19/12H01Q21/00
CPCH01Q1/12H01Q1/288H01Q1/50H01Q1/52H01Q19/12H01Q21/0006
Inventor 苏晟汤小蓉张健军徐红新马岩冰吴翠翠张宇环沈千朝
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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