Ground simulation method and device for X ray pulsars-based navigation

Abstract

The invention relates to a ground simulation method and a device for X ray pulsars-based navigation, wherein the method comprises the following steps that: (1) an X ray pulsar simulation source generates at least three X ray pulses in different spatial positions; (2) a plurality of X ray pulses are incident onto a metallic target, and the metallic target is aluminum Al, titanium Ti, chromium Cr, iron Fe, copper Cu or molybdenum Mo; (3) an X ray detector receives a secondary X ray identification spectrum generated by the metallic target; and (4) an electronic read-out system obtains multipath output signals of the X ray detector, each path of output signal comprises information of the time of arrival of corresponding one pulse, and the information of the time of arrival of the pulse is the time TOA when the X ray identification spectrum reaches the X ray detector. The invention realizes calibration of the X ray detector, measurement of the time of arrival (TOA) of X ray pulsar pulse and verification of navigation algorithm, and provides complete experimental device and platform for pulsars-based navigation.

Description

technical field [0001] The invention relates to a ground simulation method and device for X-ray pulsar navigation, which is a key technology for studying X-ray pulsar navigation, such as calibration of X-ray detectors, measurement of pulse time of arrival (TOA), pulse phase, and navigation. An important experimental setup for algorithm verification. Background technique [0002] The autonomous navigation method based on X-ray pulsars is a new type of spacecraft autonomous navigation technology. This technology performs precise position calculation by detecting the X-ray pulses of deep-space pulsars, and realizes high-precision autonomous navigation and operation management of spacecraft. Limitation of line-of-sight to earth observatory stations and fixed nav beacons. The Defense Advanced Research Projects Agency (DARPA), the National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), Japan, the European Union and other countries and organizations ...

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Problems solved by technology

[0003] However, the existing research on X-ray pulsar navigation is only based on navigation algorithms, such as the Chinese invention patent "X-ray pulsar-based autonomous navigation system and method for navigation satellites" (authorization number: CN100501331C), and the The simulation generation system of the star signal source, such as the Chinese patent "periodical ray signal generation system" (application number: 200810031475), "a pulsar signal simulator" (application number: 200910023383), etc., does not have a complete set of Ground simulation device and simulation method for X-ray pulsar navigation

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