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Ku (K-under) wave band fully-coherent radar target simulator

A radar target simulation, ku-band technology, applied in instruments, radio wave measurement systems, etc., can solve the problem of not being able to provide frequency synthesizers, and achieve the effect of reducing errors and reducing costs

Active Publication Date: 2014-03-26
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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AI Technical Summary

Problems solved by technology

However, the prior art cannot provide such a frequency synthesizer to meet the requirements of a multifunctional fully coherent radar radio frequency signal simulator

Method used

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  • Ku (K-under) wave band fully-coherent radar target simulator

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Embodiment Construction

[0024] The radar target simulator for fully coherent Ku-band of the present invention mainly provides five-way signals such as target echo analog signals, two-way local oscillator signals, and intermediate frequency signals (including intermediate frequency homologous signals) for users to test the performance of receivers. output, and require all signals to be fully coherent.

[0025] figure 1 It is a schematic diagram of the principle of the radar target simulator for Ku-band full coherence of the present invention. Such as figure 1 As shown, the radar target simulator for fully coherent Ku-band of the present invention includes: a control device, a Ku-band microwave signal source, an X-band microwave signal source, an S-band microwave signal source, an intermediate frequency signal source and a constant temperature crystal oscillator.

[0026] In the radar target simulator, the same constant temperature crystal oscillator (100MHz high precision constant temperature refere...

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Abstract

The invention discloses a Ku wave band fully-coherent radar target simulator. The Ku wave band fully-coherent radar target simulator comprises a control device, a Ku wave band microwave signal source, an X wave band microwave signal source, an S wave band microwave signal source and an intermediate frequency signal source. The Ku wave band fully-coherent radar target simulator can simulate and generate radar target echo signals, two-way local oscillator signals and intermediate frequency signals and completes detection of performance of radar equipment; utilizes a DDS (Direct Digital Synthesis) technology as theoretical basis and successfully achieves the generation of intermediate frequency Doppler signals of the radar target simulator; utilizes the DDS spread spectrum technology to expand a DDS operation bandwidth to a microwave frequency band needed by people, and completes the generation of echo simulation signals of a radio frequency target; utilizes a PLL (Phase Locking Loop) technology to achieve the generation of the local oscillator signals, meanwhile utilizes the same crystal oscillator as clock reference, achieves full-coherence of all the signals, and provides basis for completion of performance tests of Ku wave band radar equipment.

Description

technical field [0001] The invention belongs to the field of microwave measuring instruments, in particular to a radar target simulator used for Ku-band full coherence. Background technique [0002] As a new radar equipment, the radar target simulator is used to simulate various radar target echo signals, and is an effective tool for testing radar performance and training radar operators. In order to obtain good search, tracking, multi-target, anti-jamming and other performances, modern high-performance military radars almost all use fully coherent frequency agility, phased array, MTI (moving target display), PD (pulse Doppler), Compatible or coexisting systems such as LFM (broadband linear frequency modulation) pulse compression. The fully coherent radar must keep the initial phase of each transmitted RF pulse consistent, that is, the fully coherent radar requires that the frequencies of all signals come from the same high-stable reference source, and the transmitted signa...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 刁静鲁刚陈冰郑永丰陈斐赵军董阳
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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