Spatial-Time Relationships When Measuring the Range and the Velocity of Spacecrafts

Chernoyarov, O.; Ivanov, V.; Demina, T.; Dachian, Serguei; Salnikova, A.

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.5281/zenodo.5838614

URL permanente :

http://hdl.handle.net/20.500.12210/121743

Titre :

Spatial-Time Relationships When Measuring the Range and the Velocity of Spacecrafts

Auteur(s) :

Chernoyarov, O. [Auteur]
Moscow Power Engineering Institute [MPEI]
Ivanov, V. [Auteur]
Moscow Power Engineering Institute [MPEI]
Demina, T. [Auteur]
Dachian, Serguei [Auteur]

Laboratoire Paul Painlevé - UMR 8524 [LPP]
Salnikova, A. [Auteur]
Moscow Power Engineering Institute [MPEI]

Titre de la revue :

Engineering Letters

Pagination :

1044-1059

Éditeur :

IAENG

Date de publication :

2021

ISSN :

1816-0948

Mot(s)-clé(s) en anglais :

Space-time relationships
spacecraft
range
velocity
monostatic radar

Discipline(s) HAL :

Statistiques [stat]/Applications [stat.AP]

Résumé en anglais : [en]

The problem of determining the range and the radial velocity of space crafts in the middle and deep space by a monostatic radar is considered. The tested determination method is based on the calculations concerning the ...
Lire la suite >The problem of determining the range and the radial velocity of space crafts in the middle and deep space by a monostatic radar is considered. The tested determination method is based on the calculations concerning the relayed signal reception moment and its delay relative to both the emission moment and the Doppler shift of the carrier frequency from the emitted signal frequency (active mode). The results of the determination of the radial velocity only by calculating the Doppler shift of the onboard generator carrier frequency (passive mode) are also examined. The analysis of the space-time relationships during the curvilinear movement of the radar in an inertial geocentric system is conducted and it allows testing the radar as an autonomous measuring device that measures the range to the spacecraft in a certain coordinate system and then matches the measurement result with the estimated time suggested by this system. It is shown that practically the same result is obtained in the station coordinate system for the mean time between the signal emission and the reception relative to the calculated point that does not coincide with the radar location but changes its position with the measured signal delay depending on the time of the day and time of the year. It is established that when the range and the velocity in the station coordinate system (active operation mode) are measured simultaneously, the radial velocity is calculated relative to the target point, while the measured value depends on the angular direction set for the spacecraft. In the passive mode of operation (one-sided emission), to calculate the direction and the components of the velocity vector accurately, one needs a knowledge of the spacecraft coordinates and the scalar of orbital velocity. Pulse signal, modulating interference, Gaussian process, maximum likelihood method, discrimination algorithm, decision statistic, local Markov , average error probability.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Laboratoire Paul Painlevé - UMR 8524

Source :

Harvested from HAL

Date de dépôt :

2025-01-24T14:27:51Z

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