X-ray pulsar navigation electronics readout with energy level measurement
A technology of pulsar navigation and readout device, applied in the field of pulsar navigation
Active Publication Date: 2017-07-28
XIDIAN UNIV
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[0005] The purpose of the present invention is to propose a readout device for X-ray pulsar navigation electronics with the function of energy level measurement to realize the X-ray Photon Arrival Time Readout and Energy Level Measurement of Pulsar Signals
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] refer to figure 1 , the present invention has the X-ray pulsar navigation electronics readout device of energy level measurement function, comprises: amplifier circuit 1, analog-to-digital converter 2, digital signal processing unit 3 and communication interface 4; Wherein:
[0024] The amplifier circuit 1 is composed of a charge-sensitive preamplifier and a linear amplifier;
[0025] Analog-to-digital converter 2 adopts but is not limited to AD9926 with 12-bit precision, and the sampling rate is 50Msps;
[0026] The digital signal processing unit 3 is realized by a programmable logic device, which includes a digital inverse filter 31 and a photon information readout unit 32;
[0027] The communication interface 4 is selected but not limited to a general asynchronous serial interface, and the communication baud rate is 4Mbps, which ensures high...
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The invention discloses an X-ray pulsar navigation electronics reading device having an energy level measurement function, mainly solving the problems that the existing device cannot measure the photon arrival time and the energy level simultaneously. The X-ray pulsar navigation electronics reading device comprises an amplifier circuit (1), an analog-digital converter (2), a digital signal processing unit (3) and a communication interface (4), wherein the amplifier circuit (1) is used for amplifying a signal output by a detector, realizing impedance matching and improving the signal-to-noise ratio of the signal; the analog-digital converter (2) is used for converting the signal output by the detector and amplified by the amplifier circuit into a digital signal; the digital signal processing unit (3) comprises a digital inverse filter and a photon information reading module and can realize measurement of the photon arrival time and the energy level simultaneously; and the communication interface (4) is used for transmitting the measurement result to a computer or other terminal equipment to be processed. The X-ray pulsar navigation electronics reading device can realize measurement of the photon arrival time and the energy level simultaneously, and can be used for the verification of the X-ray detector and the pulsar navigation ground-based simulation system.
Description
technical field [0001] The invention belongs to the field of pulsar navigation, and relates to an X-ray pulsar navigation electronics readout device with energy level measurement function, which can be used to verify X-ray detector technology and serve as an important part of the pulsar navigation ground simulation system. Background technique [0002] Pulsars are high-speed rotating neutron stars with good periodic stability, and are known as the most stable astronomical clocks in nature. Pulsars that radiate signals in the X-ray frequency range are called X-ray pulsars. X-ray pulsar navigation is to install X-ray detectors on the spacecraft to detect X-ray photons radiated by pulsars, measure the pulse arrival time and extract pulsar image information. After corresponding signal and data processing, the spacecraft can autonomously, Determine navigation parameters such as orbit, time and attitude with high precision, and realize X-ray pulsar navigation. X-ray pulsar navig...
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IPC IPC(8): G01C25/00G01C21/24
CPCG01C21/24G01C25/00
Inventor 方海燕刘彦明谢楷李小平贾静孙海峰刘洋
Owner XIDIAN UNIV