Silicon drift detector processing circuitry for x-ray pulsar navigation sensors

Abstract

A silicon drifting detector processing circuit for an X-ray pulsar navigation sensor comprises a pre-amplification module, a reset module and a refrigeration module, wherein the pre-amplification module performs low noise amplification on generate pre-amplification photonic signals after receiving photonic signals output by a silicon drifting detector, the pre-amplification photonic signals are output to the pulsar navigation sensor and the reset module respectively, the reset module generates reset signals by the pre-amplification photonic signals and then outputs the reset signals to the silicon drifting detector, the detector is reset, the photonic signals output by the silicon drifting detector are prevented from being saturated, the refrigeration module takes temperature signals of a thermosensitive diode in the detector as input, the temperature is compared with preset temperature, and produced refrigeration current controls the temperature in the detector to be constant with the preset temperature. The detector processing circuit is designed by anti-radiation aerospace class devices, and compared with the prior art, the detector processing circuit can be better suitable for operation on orbit of aerospace products.

Description

technical field [0001] The invention relates to a silicon drift detector processing circuit, in particular to a silicon drift detector processing circuit for X-ray pulsar navigation sensors, which can be used for X-ray pulsar navigation sensors of spacecraft such as satellites and spaceships product. Background technique [0002] The X-ray pulsar navigation sensor conducts navigation according to the pulse signal emitted by the pulsar and the information of the angular position of the pulsar accurately determined in advance. In 1999, the ARGOS advanced research and unconventional stellar characteristics experiment carried on the earth observation satellite launched by the United States initially verified the feasibility of X-ray pulsar navigation. In 2004, the US Defense Advanced Research Projects Agency launched the "X-ray source-based autonomous navigation and positioning" research program. The United States plans to conduct the NICE experiment on the International Space...

AI Technical Summary

Problems solved by technology

[0008] Traditional silicon drift detector processing circuits all use commercial or industrial grade components, which cannot meet the long-term work requirements of aerospace products in high-radiation environments, and cannot be used for X-ray pulsar navigation sensors

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