Dr. Hai-jiao Jiang Profile

Dr. Hai-jiao Jiang

at NIAOT

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Author

Publications (9)

Proceedings Article | 28 November 2023 Poster + Paper

Preliminary investigation on the effect of secondary mirror assembly on the optical performance for the MUltiplexed Survey Telescope

Shunhua Gao, Liquan Guo, Qi Bian, Dedong Gao, Haijiao Jiang, Lei Huang

Proceedings Volume 12765, 127651L (2023) https://doi.org/10.1117/12.2687403

KEYWORDS: Mirrors, Telescopes, Multiplexing, Spectroscopy, Finite element methods, Design and modelling

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Proceedings Article | 28 November 2023 Poster + Paper

Preliminary research of the light-weighted secondary mirror with passive supports for the MUltiplexed Survey Telescope

Zhaoyang Liu, Liquan Guo, Qi Bian, Dedong Gao, Haijiao Jiang, Lei Huang

Proceedings Volume 12765, 127651K (2023) https://doi.org/10.1117/12.2687383

KEYWORDS: Mirrors, Mirror surfaces, Telescopes, Design and modelling, Thermal stability

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Proceedings Article | 28 November 2023 Poster + Paper

Investigation of optical distortion self-compensation ability in the MUltiplexed Survey Telescope

Xiaodong Dai, Qi Bian, Yamin Zheng, Yifan Zhang, Haijiao Jiang, Zheng Cai, Lei Huang

Proceedings Volume 12765, 127651I (2023) https://doi.org/10.1117/12.2687270

KEYWORDS: Telescopes, Mirrors, Active optics, Distortion, Design and modelling, Multiplexing, Wavefronts, Mirror surfaces, Image quality, Chemical elements

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Proceedings Article | 6 July 2018 Presentation + Paper

The LAMOST middle resolution spectrograph

Yonghui Hou, Linlin Tang, Mingming Xu, Haijiao Jiang, Zhongwen Hu, Lei Wang, Hangxin Ji, Yongtian Zhu

Proceedings Volume 10702, 107021I (2018) https://doi.org/10.1117/12.2312279

KEYWORDS: Spectrographs, Spectroscopy, Cameras, Imaging systems, Astronomical imaging, Spectroscopes, Telescopes, CCD cameras, Spectral resolution

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Proceedings Article | 6 July 2018 Paper

The preliminary design of the next generation Palomar spectrograph for 200-inch Hale telescope

Haijiao Jiang, Zhongwen Hu, Mingming Xu, Songxin Dai, Huatao Zhang, Lei Wang, Yi Chen

Proceedings Volume 10702, 107022L (2018) https://doi.org/10.1117/12.2312550

KEYWORDS: Spectrographs, Cameras, Sensors, Telescopes, Mirrors, Spectral resolution, Collimators, Observatories, Optical design, Collimation

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Proceedings Article | 6 July 2018 Paper

Design of a multiband near-infrared sky brightness monitor

Feng-xin Jiang, Jie Chen, Shu-cheng Dong, Qi-Jie Tang, Jin-ting Chen, Yi-hao Zhang, Zhi-yue Wang, Yaqi Chen, Hong-fei Zhang, Hai-jiao Jiang, Qing-feng Zhu, Peng Jiang, Tuo Ji, Jian Wang

Proceedings Volume 10709, 107092H (2018) https://doi.org/10.1117/12.2309842

KEYWORDS: Sensors, Infrared radiation, Infrared sensors, Optical filters, Data acquisition, Observatories, Control systems, Near infrared, Electronics, Astronomy

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Proceedings Article | 28 July 2014 Paper

Study on a multi-delay spectral interferometry for stellar radial velocity measurement

Kai Zhang, Haijiao Jiang, Jin Tang, Hangxin Ji, Yongtian Zhu, Liang Wang

Proceedings Volume 9147, 914757 (2014) https://doi.org/10.1117/12.2055562

KEYWORDS: Interferometry, Interferometers, Spectrographs, Velocity measurements, Calibration, Doppler effect, Astronomy, Telescopes, Astronomical imaging, Optical interferometry

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High accuracy radial velocity measurement isn’t only one of the most important methods for detecting earth-like Exoplanets, but also one of the main developing fields of astronomical observation technologies in future. Externally dispersed interferometry (EDI) generates a kind of particular interference spectrum through combining a fixed-delay interferometer with a medium-resolution spectrograph. It effectively enhances radial velocity measuring accuracy by several times. Another further study on multi-delay interferometry was gradually developed after observation success with only a fixed-delay, and its relative instrumentation makes more impressive performance in near Infrared band. Multi-delay is capable of giving wider coverage from low to high frequency in Fourier field so that gives a higher accuracy in radial velocity measurement. To study on this new technology and verify its feasibility at Guo Shoujing telescope (LAMOST), an experimental instrumentation with single fixed-delay named MESSI has been built and tested at our lab. Another experimental study on multi-delay spectral interferometry given here is being done as well. Basically, this multi-delay experimental system is designed in according to the similar instrument named TEDI at Palomar observatory and the preliminary test result of MESSI. Due to existence of LAMOST spectrograph at lab, a multi-delay interferometer design actually dominates our work. It’s generally composed of three parts, respectively science optics, phase-stabilizing optics and delay-calibrating optics. To switch different fixed delays smoothly during observation, the delay-calibrating optics is possibly useful to get high repeatability during switching motion through polychromatic interferometry. Although this metrology is based on white light interferometry in theory, it’s different that integrates all of interference signals independently obtained by different monochromatic light in order to avoid dispersion error caused by broad band in big optical path difference (OPD).

Proceedings Article | 24 July 2014 Paper

Test of multi-object exoplanet search spectral interferometer

Kai Zhang, Liang Wang, Haijiao Jiang, Yongtian Zhu, Yonghui Hou, Songxin Dai, Jin Tang, Zhen Tang, Yizhong Zeng, Yi Chen, Lei Wang, Zhongwen Hu

Proceedings Volume 9147, 914758 (2014) https://doi.org/10.1117/12.2055566

KEYWORDS: Spectrographs, Interferometers, Astronomical imaging, Telescopes, Optical fibers, Astronomy, Exoplanetary science, Exoplanets, Iodine cells, Spectral resolution

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Exoplanet detection, a highlight in the current astronomy, will be part of puzzle in astronomical and astrophysical future, which contains dark energy, dark matter, early universe, black hole, galactic evolution and so on. At present, most of the detected Exoplanets are confirmed through methods of radial velocity and transit. Guo shoujing Telescope well known as LAMOST is an advanced multi-object spectral survey telescope equipped with 4000 fibers and 16 low resolution fiber spectrographs. To explore its potential in different astronomical activities, a new radial velocity method named Externally Dispersed Interferometry (EDI) is applied to serve Exoplanet detection through combining a fixed-delay interferometer with the existing spectrograph in medium spectral resolution mode (R=5,000-10,000). This new technology has an impressive feature to enhance radial velocity measuring accuracy of the existing spectrograph through installing a fixed-delay interferometer in front of spectrograph. This way produces an interference spectrum with higher sensitivity to Doppler Effect by interference phase and fixed delay. This relative system named Multi-object Exoplanet Search Spectral Interferometer (MESSI) is composed of a few parts, including a pair of multi-fiber coupling sockets, a remote control iodine subsystem, a multi-object fixed delay interferometer and the existing spectrograph. It covers from 500 to 550 nm and simultaneously observes up to 21 stars. Even if it’s an experimental instrument at present, it’s still well demonstrated in paper that how MESSI does explore an effective way to build its own system under the existing condition of LAMOST and get its expected performance for multi-object Exoplanet detection, especially instrument stability and its special data reduction. As a result of test at lab, inside temperature of its instrumental chamber is stable in a range of ±0.5degree Celsius within 12 hours, and the direct instrumental stability without further observation correction is equivalent to be ±50m/s every 20mins.

Proceedings Article | 20 August 2011 Paper

Research on the effect of laser radar system parameters on the range image quality

Hai-jiao Jiang, Jian-cheng Lai, Chun-yong Wang, Wei Yan, Zhen-hua Li

Proceedings Volume 8192, 819223 (2011) https://doi.org/10.1117/12.900490

KEYWORDS: Image quality, LIDAR, Signal to noise ratio, Pulsed laser operation, Interference (communication), Laser damage threshold, Laser systems engineering, Range imaging, Laser development, Target recognition

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Showing 5 of 9 publications

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