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High-Accuracy Self-Calibration for Smart Optical Orbiting Payloads Integrated with Attitude and Position Determination

機(jī)譯：集成了姿態(tài)和位置確定功能的智能光學(xué)軌道有效載荷的高精度自校準(zhǔn)

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A high-accuracy space smart payload integrated with attitude and position (SSPIAP) is a new type of optical remote sensor that can autonomously complete image positioning. Inner orientation parameters (IOPs) are a prerequisite for image position determination of an SSPIAP. The calibration of IOPs significantly influences the precision of image position determination of SSPIAPs. IOPs can be precisely measured and calibrated in a laboratory. However, they may drift to a significant degree because of vibrations during complicated launches and on-orbit functioning. Therefore, laboratory calibration methods are not suitable for on-orbit functioning. We propose an on-orbit self-calibration method for SSPIAPs. Our method is based on an auto-collimating dichroic filter combined with a micro-electro-mechanical system (MEMS) point-source focal plane. A MEMS procedure is used to manufacture a light transceiver focal plane, which integrates with point light sources and a complementary metal oxide semiconductor (CMOS) sensor. A dichroic filter is used to fabricate an auto-collimation light reflection element. The dichroic filter and the MEMS point light sources focal plane are integrated into an SSPIAP so it can perform integrated self-calibration. Experiments show that our method can achieve micrometer-level precision, which is good enough to complete real-time calibration without temporal or spatial limitations.
機(jī)譯：集成了姿態(tài)和位置（SSPIAP）的高精度太空智能有效載荷是一種新型的光學(xué)遙感器，可以自動(dòng)完成圖像定位。內(nèi)部方向參數(shù)（IOP）是確定SSPIAP的圖像位置的先決條件。 IOP的校準(zhǔn)會(huì)顯著影響SSPIAP圖像位置確定的精度?？梢栽趯?shí)驗(yàn)室中精確測量和校準(zhǔn)IOP。但是，由于復(fù)雜的發(fā)射和在軌運(yùn)行過程中的振動(dòng)，它們可能會(huì)漂移很大。因此，實(shí)驗(yàn)室校準(zhǔn)方法不適合在軌運(yùn)行。我們提出了一種針對(duì)SSPIAP的在軌自校準(zhǔn)方法。我們的方法基于自動(dòng)準(zhǔn)直二向色濾光片與微機(jī)電系統(tǒng)（MEMS）點(diǎn)源焦平面的組合。 MEMS程序用于制造光收發(fā)器焦平面，該光收發(fā)器焦平面與點(diǎn)光源和互補(bǔ)金屬氧化物半導(dǎo)體（CMOS）傳感器集成在一起。二向色濾光片用于制造自準(zhǔn)直光反射元件。二向色濾光片和MEMS點(diǎn)光源焦平面集成到SSPIAP中，因此它可以執(zhí)行集成的自校準(zhǔn)。實(shí)驗(yàn)表明，我們的方法可以達(dá)到微米級(jí)的精度，足以在沒有時(shí)間或空間限制的情況下完成實(shí)時(shí)校準(zhǔn)。

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