Results 141 to 150 of about 605 (176)

A method to calibrate the on-board timing based on pulsar observation

2011 6th IEEE Conference on Industrial Electronics and Applications, 2011
Considering the on-board clock stability, the paper presents a method of timing calibration strategy based on the observation of pulsars, a natural celestial source, in order to improve the timing accuracy. A calibration model is established and the error factors are considered based on the characteristic of pulsars' stable and periodical signals, and ...
Pan Rui
exaly   +2 more sources

A fast pulse time-delay estimation method for X-ray pulsars based on wavelet-bispectrum

Optik, 2020
Abstract X-ray pulsar-based navigation technology provides real-time aerospace information for spacecraft through the received X-ray photons. The time-delay estimation accuracy of the pulse integrated profile is one of the determinants of navigation accuracy.
Yangkun Wu, Zhiwei Kang, Jin Liu
openaire   +1 more source

Detector random time delay compensation method for X-ray pulsar observation

Optik, 2017
Abstract For recent few decades, the observation for X-ray emission of pulsar is very popular. Among the multiple experiments, to construct the signal profile of X-ray pulsar is a significant one. During the observation, the X-ray signal photons of pulsars need to be collected by sensors in space.
Dapeng Zhang   +5 more
openaire   +1 more source

A Method for Measurement of the Pulse Arrival Time of the Radio Emission of Pulsars in a Wideband Optoelectronic Processor

Measurement Techniques, 2017
A method of measuring the pulse arrival time of the radio emission of pulsars is described. The method is based on the use of a wideband optoelectronic processor. A special feature of the processor is a special operating mode (time delay and integration mode) of a multi-element CCD photodetector in which the dispersion of the radio emission received by
A. P. Lavrov, S. A. Molodyakov
openaire   +1 more source

A New Pulse Time-of-Arrival Estimation Method for X-Ray Pulsar Navigation

2015
X-ray pulsar navigation (XPNAV) is an important technology for long time and high precious spacecraft autonomous navigation. XPNAV system can offer position, velocity and accurate time navigation information for spacecraft in near-earth orbit, geostationary orbit, elliptic orbit or interplanetary orbit. XPNAV has an extremely important military use and
Qingqing Lin, Ping Shuai, Liangwei Huang
openaire   +1 more source

X-ray pulsar-based navigation method using one sensor and modified time-differenced measurement

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2017
X-ray pulsar-based navigation method using one sensor (XNAVO) could fix the position of satellites by sequentially observing X-ray pulsars at the cost of loading one X-ray sensor, which drops the demand on the loading capability of satellite and is feasible for practice.
Yidi Wang   +4 more
openaire   +1 more source

Home - About - Disclaimer - Privacy