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Phased array seeker front-end frequency conversion calibration compensation system

A compensation system and phased array technology, applied in receiver monitoring, transmitter monitoring, antenna radiation pattern and other directions, can solve the problems of high cost of far-field calibration compensation system, inconsistency of frequency conversion channels, etc. Calibration compensation and test verification, the effect of improving adaptability

Active Publication Date: 2021-01-08
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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Problems solved by technology

However, since the price of the pitch axis of the two-axis turntable increases with the increase in the size and quality of the product to be carried, the cost of the far-field calibration compensation system is relatively high when faced with a large-scale and high-quality radome; on the other hand, due to the phase control The channels of the array frequency conversion channel cannot be completely consistent, so it is necessary to compensate for the inconsistency of the frequency conversion channel at the same time

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  • Phased array seeker front-end frequency conversion calibration compensation system
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  • Phased array seeker front-end frequency conversion calibration compensation system

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Embodiment Construction

[0045] The embodiment of the present invention provides a frequency conversion calibration compensation system for the front end of the phased array seeker. The roll axis of the two-axis turntable replaces the high-cost pitch axis, which reduces the system cost. By using the frequency conversion working mode of the vector network analyzer, it can At the same time, it meets the calibration requirements of the phased array frequency conversion channel.

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

[0047] see figure 1 As shown, a phased array seeker front-end frequency conversion calibr...

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Abstract

The invention discloses a phased array seeker front end frequency conversion calibration compensation system, and relates to the field of phased array antenna calibration. The system comprises a product to be measured, a measurement subsystem, a positioning subsystem, a control subsystem and a software subsystem, wherein the product to be measured comprises a phased array seeker front end and a missile radome; the measurement subsystem comprises a vector network analyzer, a reference mixer, an intermediate frequency combiner and a standard horn antenna, the standard horn antenna is arranged opposite to the front end of the phased array seeker, and the measurement subsystem is used for generating, transmitting, acquiring and measuring signals; the positioning subsystem is used for erectinga three-dimensional scanning frame of a standard horn antenna and erecting a two-axis turntable of a to-be-measured product, and the positioning subsystem is used for controlling the spatial positionsof the to-be-measured product and the measuring subsystem. According to the invention, the system cost is reduced, and the calibration requirement of the phased array frequency conversion channel canbe met at the same time.

Description

technical field [0001] The invention relates to the field of phased array antenna calibration, in particular to a phased array seeker front-end frequency conversion calibration compensation system. Background technique [0002] Phased array antenna is an important development direction of seeker antenna. Due to the special use environment of ballistic missiles, the seeker needs to be used with a radome. The introduction of the radome will lead to the deterioration of the pattern index of the phased array antenna and seriously affect the performance of the seeker. Therefore, it is necessary to calibrate and compensate the influence of the missile radome on the amplitude and phase of the phased array antenna. [0003] The phased array antenna far-field calibration system uses a two-axis azimuth and pitch turntable to control the movement of the seeker, and compensates the influence introduced by the radome by collecting the phase and amplitude of each array element of the pha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/12H04B17/21G01R29/10
CPCH04B17/12H04B17/21G01R29/10
Inventor 石稳李赟冀周世平李芬芬靳永亮王正扬黄龙侍伟伟胡哲
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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