A detector system for x‑ray pulsar navigation and positioning

Abstract

The invention relates to a detector system for X-ray pulsar navigation and positioning, which comprises detector modules, a focal plane circuit board (5) and a signal circuit board (7) distributed in a matrix with M rows and N arrays, wherein M and N are positive integers. The detector module comprises a curved surface MPO lens (1) and a Si detector (3), the Si detector (3) is positioned at a sphere centre of the curved surface MPO lens (1) has same optical axis with the sphere centre, and the focal plane circuit board (5) is corresponded to one or more detector modules. The X-ray from pulsar performs incidence into the curved surface MPO lens, then is gathered to the Si detector (3), the X-ray photon is conveyed to electron by the Si detector (3), electron on the Si detector (3) is conversed to an electrical signal by the focal plane circuit board (5), the signal circuit board (7) is capable of shaping, amplifying and performing AD transition for electric signals, and then the electric signals are output to image acquisition equipment. According to the invention, modules are spliced according to the detection area or signal to noise ratio requirement, and effective detection of x ray in a view field.

Description

technical field [0001] The invention relates to a detector system capable of arbitrarily splicing detection modules according to detection area or signal-to-noise ratio requirements, and effectively detecting X-rays in a field of view. Background technique [0002] X-ray Pulsar-based Navigation (X-ray Pulsar-based Navigation, XPNAV) uses the determined pulsar space position and highly stable pulse signal to navigate and position the spacecraft, which is a new astronomical autonomous navigation. Positioning Technology. It can be seen from its principle that how to detect and obtain accurate waveforms is the core problem of the X-ray pulsar navigation system. [0003] The "XNAV Program" of the United States and the "Pulsar Navigation Research Program of Deep Space Probe" of the European Space Agency both use micro-aperture optical systems to focus the X-rays from pulsars. This optical system has many advantages such as small size and light weight. It can efficiently suppress...

AI Technical Summary

Problems solved by technology

However, a single curved surface MPO lens is used in foreign countries. Due to the limitation of processing level and other aspects, the aperture size of a single curved surface MPO lens is limited, and the detection area is extremely limited.

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