Phase center measuring device and method and mounting method for array antenna

An array antenna and measurement device technology, which is applied in the direction of measurement devices, radio wave measurement systems, radio wave reflection/reradiation, etc., can solve the problems of random jitter error of load antenna, inability to accurately determine relative motion relationship of antenna, severe jitter, etc. , to achieve the effect of small size, light weight and accurate measurement

Active Publication Date: 2020-02-28
SOUTHEAST UNIV
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Problems solved by technology

However, the airborne platform jitters violently during flight; the load antenna will produce random jitter errors with the deflection and flutter of the wing, so the relative motion relationship between the sub-antennas cannot be accurately determined

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  • Phase center measuring device and method and mounting method for array antenna
  • Phase center measuring device and method and mounting method for array antenna

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Embodiment Construction

[0027] Such as Figure 1-2 As shown, a measurement device for the phase center of an array antenna includes a FBG sensing system, a high-precision inertial device, a low-precision inertial device, a phased array antenna and a DPCS navigation computer; the FBG sensing system includes The FBG sensor array on the wing skin surface; the high-precision inertial device is arranged inside the cabin; the low-precision inertial device includes two, symmetrically arranged at both ends of the wing; the phased array antenna is evenly and symmetrically arranged on Both sides of the wing; the DPCS navigation computer is used to solve the pose information of the high-precision inertial device and the low-precision inertial device.

[0028] The distance between two adjacent FBG sensors in the FBG sensor array is determined according to the iFEM method analysis, and the FBG sensor arrays corresponding to the upper and lower skins are continuously connected.

[0029] The installation method of...

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Abstract

The invention discloses a phase center measuring device and method and a mounting method for an array antenna. The device comprises an FBG sensing system, a high-precision inertial device, low-precision inertial devices, a phased array antenna and a DPCS navigation computer. The FBG sensing system comprises FBG sensor arrays which are uniformly arranged on the surfaces of the wing skins at the twosides; the high-precision inertia device is arranged in the cabin; the two low-precision inertial devices are symmetrically arranged at the two ends of a wing; the phased array antennas are uniformlyand symmetrically arranged at two sides of the wing; and the DPCS navigation computer is used for resolving the pose information of the high-precision inertial device and the low-precision inertial devices. The pose change condition of the array antenna phase center can be acquired in real time with high precision in a dynamic environment, the cost is low, and the reliability is high.

Description

Technical field: [0001] The invention relates to a method for measuring the phase center of an airborne array antenna, in particular to a measuring device, method and installation method for the phase center of the array antenna. Background technique: [0002] The airborne high-resolution earth observation system is a comprehensive technology that uses motion imaging payloads to obtain high-precision spatial information on the earth's surface. A series of major issues are of great significance. [0003] Among them, the measurement of the phase center of the airborne array antenna directly affects the imaging resolution of the earth observation system. However, the airborne platform jitters violently during flight; the load antenna will generate random jitter errors with the deflection and flutter of the wing, so the relative motion relationship between the sub-antennas cannot be accurately determined. To this end, it is necessary to accurately measure the motion parameters...

Claims

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Application Information

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IPC IPC(8): G01C21/16G01S13/06G01S7/40G01S13/02
CPCG01C21/165G01S13/06G01S7/4021G01S13/02G01S2013/0245
Inventor 陈熙源马振闫晣方琳
Owner SOUTHEAST UNIV
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