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Single-carrier multiple-antenna occultation signal generation system

A multi-antenna and carrier technology, applied in the field of satellite navigation, can solve the problem of unable to meet the test and test requirements of occultation receiver

Active Publication Date: 2014-03-26
SPACE STAR TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, research at home and abroad is mainly focused on the pure software simulation generation stage, mainly through the 3D ray tracing forward simulation technology to realize the simulation of phase delay and amplitude transformation, which is used to study the inversion algorithm of occultation receiving data, but this The method cannot meet the test and test requirements of occultation receivers, occultation antennas and other equipment, so the development of radio frequency simulation technology for occultation signals has become an inevitable choice

Method used

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  • Single-carrier multiple-antenna occultation signal generation system
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  • Single-carrier multiple-antenna occultation signal generation system

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further introduced below in conjunction with the accompanying drawings.

[0038] like figure 1 As shown, a single-carrier multi-antenna occultation signal generation system can simultaneously simulate the direct star channel, the forward neutral atmospheric channel, the forward ionospheric channel, the backward neutral atmospheric channel and the backward ionospheric channel. The system includes: direct star-occultation data real-time generation unit, direct star-occultation signal real-time generation unit, control computer and occultation constellation simulation unit;

[0039] The occultation constellation simulation unit transmits the generated direct star and occultation observation data to the direct star-occultation data real-time production unit through the reflective memory network card for data processing;

[0040]The direct star-occultation data real-time generation unit generates the accum...

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Abstract

A single-carrier multiple-antenna occultation signal generation system includes a direct star - occultation data real-time generation unit and a direct star - occultation signal real-time generation unit. The direct star - occultation data real-time generation unit is used to generate an accumulative parameter and a power control code corresponding to direct star and occultation observation data; and the direct star - occultation signal real-time generation unit uses the inputted accumulative parameter and power control code to generate a five-way radio frequency signal output which respectively includes a direct star channel, a front neutral atmosphere channel, a front ionized layer channel, a rear neutral atmosphere channel, and a rear ionized layer channel. The single-carrier multiple-antenna occultation signal generation system can simulate a navigation positioning signal, an ionized layer occultation signal and a neutral atmosphere occultation signal, so that the single-carrier multiple-antenna occultation signal is truly realized; and the occultation signal source parallel with the simulation network can be formed to carry out the multi-star occultation signal simulation.

Description

technical field [0001] The invention relates to a single-carrier multi-antenna occultation signal generation system, which belongs to the technical field of satellite navigation. Background technique [0002] Occultation detection technology is an extended application of GNSS (Global Navigation Satellite System) in the field of atmospheric observation. It uses the phase delay and amplitude information generated by the refractive index changes that occur when GNSS signals propagate through the propagation medium (ionosphere and neutral atmosphere). , to invert ionospheric electron density with time, season, geographic location, solar activity level (space environment) changes, and neutral atmospheric inversion layer, atmospheric gravity waves, and frontal changes. At present, occultation detection technology has developed into a meteorological powerful tool for research. [0003] At present, the research on occultation detection technology at home and abroad is mainly reflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 王宏伟王晔孟斌陈潇蔡乐毕亮郭玉婷郝庆畅邹国际张爽娜
Owner SPACE STAR TECH CO LTD
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