Другие журналы
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Starovoitov
Applied Questions of Onboard Laser Radar Equipment Development
Engineering Education # 09, September 2015 DOI: 10.7463/0915.0811999 pp. 81-105
Evaluation of Attenuation of Solar Radiation by Space System for Regulate the Thermal Conditions of Earth's Atmosphere
Engineering Education # 07, July 2014 DOI: 10.7463/0714.0719558 pp. 155-168
Study of Efficiency and Optimization Parameters of Laser Device for Measuring the Range Rate of a Spacecraft
Engineering Education # 06, June 2014 DOI: 10.7463/0614.0712240 The article presents a developed laser rangefinder-speedometer (LRS) to replace the hand-held laser rangefinders on board transport spacecraft. Using the generalized function of efficiency, the LRFSM characteristics were estimated to show that the LRS has the highest efficiency as compared with existing analogues. As a result of relationship analysis of measuring speed accuracy and reliability of LRS laser source, Pareto sets are obtained, which enable providing the optimal operation conditions of a device. Energy calculations are performed for 5 km range measurements on space complex with a complicated configuration such as the International Space Station. The article considers the use of a geometric factor to protect a photo-detector from the overload when receiving a signal from the nearby angular reflector. The paper presents the results of efficiency evaluation using a generalized function for different types of laser sources that can be used in the LRS.
Reliability analysis of onboard laser ranging systems for control systems by movement of spacecraft
Engineering Education # 02, February 2014 DOI: 10.7463/0214.0699720 The paper purpose is to study and find the ways to improve the reliability of onboard laser ranging system (LRS) used to control the rendezvous and the descent of spacecraft. It analysizes the key factors influencing the reliability LRS. The basic assumption is that the number of pulses of pumping diodes determines the solid state laser resource. The paper investigates a reliability function of LRS affected by the pulse repetition frequency, that depends on the measurement error of approach velocity and distance between the spacecrafts. The paper gives a quantitative evaluation of increasing the reliability function owing to the developed methods to detect a passive spacecraft using LRS with no optical-mechanical scanner.
Selection of lasers for increasing the range of onboard laser ranging systems of space vehicles
Engineering Education # 08, August 2013 DOI: 10.7463/0813.0609292 The purpose of this paper is to analyze possibilities and select laser sources for onboard laser ranging systems (LLS) of space vehicles designed to locate by a diffusely reflected signal and corner reflectors (CR). Characteristics of semiconductor, solid-state and fiber lasers were presented. Energy evaluation of range capability of onboard LLS in pulsed and continuous radiation modes using lasers of different types was conducted. It was shown that increase in range capability of onboard LLS by a diffusely reflected signal up to 10 km was provided with the use of fiber lasers, and for the range capability of more than 10 km usage of solid-state lasers was required. Influence of corner reflector parameters on the range capability of LLS was estimated. The obtained results could be used in development of onboard LSS for innovative space vehicles.
Pareto optimization of parameters of onboard laser ranging systems of spacecraft
Engineering Education # 04, April 2013 DOI: 10.7463/0413.0574259 The aim of this work is to optimize parameters of onboard laser ranging systems (LRS) in order to control rendezvous and docking of spacecraft. Systematic analysis of the factors that have to be considered when developing onboard laser ranging systems of spacecraft was carried out. The authors developed a computer program designed to simulate characteristics of onboard laser ranging systems with different values of their parameters. The authors solved the problem of multi-criteria optimization of parameters of laser ranging systems by criteria of maximum range and safe viewing distance. Use of Pareto optimization provides a set of solutions from which developers can choose the most suitable for technical implementation.
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