X-ray pulsar navigation embedded simulation system based on semiconductor laser

Abstract

The invention discloses an X-ray pulsar navigation embedded simulation system based on a semiconductor laser, which comprises a data simulation unit, a photon emission unit, a photon detection unit and a navigation test unit. The data simulation unit simulates X-ray pulsar radiation signal data, and sends the X-ray pulsar radiation signal data to the photon emission unit; the photon emission unit uses simulation data to modulate light intensity of a laser modulation laser, and radiate lasers to the atmosphere; the photon detection unit receives the lasers of the photon emission unit from the atmosphere, filters non-laser spectra components in background sunlight, and sends the received lasers to the navigation test unit after carrying out counting on the received lasers; and the navigation test unit carries out noise elimination, pulse profile accumulation, pulse arrival time measurement treatment on the data of the photon detection unit, and utilizes time measurement data to carry out a navigation test. The invention can provide a complete simulation experiment platform for obtaining navigation signals, signal processing, time synchronization and navigation design verification of navigation signals.

Description

technical field [0001] The invention belongs to the technical field of navigation, and in particular relates to an X-ray pulsar navigation simulation system, which is used for simulating the autonomous celestial navigation of an orbiting spacecraft based on the X-ray pulsar. Background technique [0002] Navigation and positioning based on X-ray pulsars is a celestial navigation method that uses X-ray pulsar radiation pulse arrival time measurement as information input, which can provide position, velocity, time, attitude, etc. for near-earth, deep space and interstellar space spacecraft. Rich navigation information. The pulsar-based navigation technology was first proposed by Dr. Durns of the Jet Propulsion Laboratory in the United States in 1974; in 1981, Chester and Bateman of the Institute of Communications Systems of the United States proposed the use of pulsar X-ray sources for spacecraft navigation. Conception; in 1999, the US Air Force's "Advanced Research and Globa...

AI Technical Summary

Problems solved by technology

However, due to the high cost of special satellites for X-ray pulsar navigation experiments and the wide and complex technologies involved, an X-ray pulsar simulation system that is relatively cheap, easy to develop, and whose signal radiation and detection mechanisms are in line with the actual situation is established for X-ray pulsar simulation. Pulsar navigation research is of great significance

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