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激光跟蹤儀在交會對接微波雷達(dá)多徑試驗(yàn)中的應(yīng)用

Laser tracker used in multi-radius test of microwave radar for rendezvous and docking

  • 摘要: 交會對接微波雷達(dá)多徑試驗(yàn)是在地面模擬兩個飛行器在軌交會對接過程中由艙體表面及遮擋對微波信號造成反射干擾的一種試驗(yàn)，其目的是驗(yàn)證激光雷達(dá)系統(tǒng)功能及安裝位置的合理性。在近20 m遠(yuǎn)的距離上，對飛行器艙體上的微波雷達(dá)天線和微波應(yīng)答天線進(jìn)行角度及距離的精確測量。文章通過對試驗(yàn)環(huán)境、測量項(xiàng)目分析及不同精測方案比對，采用激光跟蹤儀直接測量艙體結(jié)構(gòu)，獲得了準(zhǔn)確的基準(zhǔn)數(shù)據(jù)，有助于指導(dǎo)微波雷達(dá)在飛船軌道艙上的精確安裝和提高交會對接微波雷達(dá)多徑試驗(yàn)的精度。激光跟蹤儀首次應(yīng)用于交會對接微波雷達(dá)多徑試驗(yàn)，相比經(jīng)緯儀在航天器基準(zhǔn)測量中具有更大的優(yōu)勢。

     

    Abstract: The system-level multi-radius test for the microwave radar is a ground environmental simulation test to verify the reflection disturbance to microwave signals from the surface and the blocking of two flight vehicles during their rendezvous. Its purpose is to validate the function of the laser radar system and its installation position. The test is carried out 20 meters away from the object vehicle, to measure precisely the angle and the distance of the microwave radar antenna and the microwave response antenna. According to the test environment and the measurement items, and by comparing different alignment schemes, the method of directly measuring the equipment structure's very benchmark is proposed, which can provide correct reference data for improving the fix position of the microwave radar outside the orbit module of the spaceship, thus guarantee the precise measurement of the microwave system in China's first space rendezvous mission.

     

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