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Synchronous-signal measuring method and device

A technology of synchronization signal and measurement method, which is applied in the field of phase synchronization of spaceborne bistatic interferometric synthetic aperture radar, and can solve the problems such as the large size of the satellite platform and the measurement of unsynchronized signals.

Active Publication Date: 2019-03-19
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large size of the satellite platform, it is impossible to measure the synchronization signal directly on the ground

Method used

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  • Synchronous-signal measuring method and device
  • Synchronous-signal measuring method and device

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Embodiment Construction

[0053] In the embodiment of the present invention, a preset reduction ratio is used to establish a scaled satellite model of the satellite to be measured; the scaled satellite model includes more than one scaled synchronous antenna established by the phase synchronous antenna to be measured according to the preset reduction ratio ; At a preset distance, transmit a preset chirp signal plane wave to the scaled satellite model; adjust the preset space angle of the scaled satellite model according to the preset adjustment rule; obtain each scaled synchronous antenna at each Received signals obtained by receiving the plane waves of the chirped signal at preset spatial angles respectively.

[0054] The synchronization signal measurement method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0055] Step 101: Using a preset reduction ratio, a scaled satellite model of the satellite to be tested is established; the scaled satellite ...

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Abstract

The invention discloses a synchronous-signal measuring method and device. Through a preset reduction scale, a scaled satellite model of a to-be-measured satellite is established; the scaled satellitemodel comprises one or above scaled synchronous antennae established according to the preset reduction scale through to-be-measured phase-synchronous antennae; at a preset distance, preset linear-frequency-modulation-signal plane waves are emitted to the scaled satellite model; according to the preset adjusting rule, preset space angles of the scaled satellite model are adjusted; receiving signalsobtained when all the scaled synchronous antennae receive the linear-frequency-modulation-signal plane waves at all the preset space angles are obtained. The invention discloses a synchronous-signalmeasuring system.

Description

technical field [0001] The invention relates to a space-borne bistatic interferometric Synthetic Aperture Radar (SAR, Synthetic Aperture Radar) phase synchronization technology, in particular to a synchronization signal measurement method and device. Background technique [0002] According to the working principle of spaceborne bistatic interferometric SAR (abbreviation: spaceborne bistatic SAR), in order to achieve high-resolution imaging of spaceborne bistatic SAR and improve the interferometric accuracy and system performance of spaceborne bistatic SAR, it is necessary to base for synchronization. [0003] The space-borne bistatic SAR phase synchronization scheme can use a synchronous antenna with full space coverage to transmit chirp waves for pulse counter-transmission, and obtain the initial phase of the synchronization signal through pulse compression, thereby realizing the phase synchronization of the space-borne bistatic SAR. [0004] During the phase synchronizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90
CPCG01S13/9023G01S13/9058
Inventor 欧乃铭张岩岩王楠刘开雨王宇
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI