On the feasibility of the monostatic scheme for constructing the land-based telescope at supervision of space objects
Annotation
In modern large aperture optical systems for tracking astronomical objects, the technology of bistatic schemes is widely introduced, in which the laser, the main and auxiliary telescopes are spatially separated. This requires additional measures to be taken when aligning the optical axes of telescopes, especially when tracking LEO space objects. The choice of bistatic schemes in astronomical telescopes is due to the problem of “tilt uncertainty” inherent in monostatic schemes for the formation of a laser reference star. This problem is caused by the difficulty or even the impossibility of determining the tilt of the wavefront when the laser guide star jitters in the image plane. The article discusses a monostatic scheme for constructing ground-based adaptive optoelectronic systems. The monostatic scheme combines the optical axis of the laser, which forms the laser guiding star, and the optical axis of the telescope, which serves to obtain images of space objects by eliminating phase disturbances of the atmosphere due to the radiation of the laser guiding star. The proposed method for determining the tilt of the wavefront in a monostatic scheme is based on the analysis of expressions for the dispersion of the tilt jitter of the images of a laser reference star and a space object for the case when the diameter of the receiving aperture of the telescope is much larger than the diameter of the aperture of the laser forming the laser reference star. This approach is based on the long-elicited strong correlation between the instantaneous values of the tilt of the laser beam and the received beam from a natural star, transmitted towards each other. When observing low-orbit small-sized space objects and laser reference stars, it is assumed that they are in the Fresnel zone of the receiving aperture of the optoelectronic system and within the isoplanatism angle of the atmosphere, determined within the framework of an isotropic and locally homogeneous model of atmospheric turbulence. The proposed solution made it possible to determine the value of the instantaneous tilt angle for the image of an inconspicuous space object in the focal plane of the receiving aperture of the telescope on the basis of measuring the instantaneous tilt angle for the actually observed image of the laser reference star. The results can be used in the development of ground-based adaptive optoelectronic tracking systems for low-orbit small-sized space objects.
Keywords
Постоянный URL
Articles in current issue
- DREM procedure application for piecewise constant parameters identification
- Features of the morphology of micro- and nanoporous copper and silver films synthesized by substitution reaction for photocatalytic application.
- Nature-inspired metaheuristic scheduling algorithms in cloud: a systematic review
- Evaluation of the applicability of asynchronous programming methods to the data consistency problem in a microservices environment
- A factor model for detection and recognition of human face contours and elements
- A study of the stability of information and telecommunication networks under conditions of stochastic percolation of nodes
- Context-free path querying with all-path semantics using matrices with sets of intermediate vertices.
- Decision support system for the proton therapy implementation
- Determination of dangerous driving behavior based on the use of information from wearable electronic devices
- An automata-based programming engine
- Bayesian losses for homoscedastic aleatoric uncertainty modeling in pollen image detection
- The speech synthesis detection algorithm based on cepstral coefficients and convolutional neural network
- Risk assessment methodology for information systems, based on the user behavior and IT-security incidents analysis
- Identification of user accounts by image comparison: the pHash-based approach
- A study of human motion in computer vision systems based on a skeletal model
- Solution of super- and hypersonic gas dynamic problems with a model of high-temperature air
- Modeling security violation processes in machine learning systems
- Mathematical modeling of an optimal oncotherapy for malignant tumors.
- A numerical study of the expansion of a gas-particles mixture with axial symmetry.
- The study of the birefrigence modulator based on lithium niobate