FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2317942642> ?p ?o ?g. }

• W2317942642 abstract "A range of space -based sensing technologies, encompassing wavelengths from the ultraviolet (particularly appropriate when observing sunlit targets against the relatively dark background of the atmosphere in the “solar blind” wavelength region) to Very Long Wavelength InfraRed, or VLWIR (which, with LWIR, collects most of the thermal radiation from a satellit e), can be adapted to provide improved space object awareness capability. Here, a challenging problem of geosynchronous belt surveillance is described, and a combination of technologies is proposed to respond to this challenge. I. Introduction ertain prope rties of the geosynchronous belt (apart from its long range from Earth and LEO platforms) challenge the “space situational awareness” (SSA) of satellites in the belt, particularly if continuous coverage of a given target or targets is required over a compl ete 24 hour period of revolution. Visible light observations from the ground can exploit large telescope collecting optics for high sensitivity using shorter wavelengths of light that result in relatively high angular resolution for the measurement of sat ellite position. The solar illumination of the Earth -facing side of objects observed from the night side of the Earth coincides well with high nighttime (dark sky) sensitivities for this type of observation. However, the sun -illuminated side of geosynchr onous satellites faces away from Earth for satellites near noontime longitudes, becomes a crescent viewing condition for mid -day viewing in general, and daytime observations from the ground are dramatically limited by the high level of daytime sky brightne ss. Ground based telescopes on the night side of Earth need to work through high zenith angles (and high atmospheric airmass) to “reach” the satellites that are even within 35 degrees or so of the noontime meridian, corresponding to outages of 4 to 5 hour s. These conditions are not favorable to the continuous type of detection and monitoring that is envisioned for the total “situational awareness” of satellites in the geosynchronous belt. As a proposed way of filling this gap and enabling continuous (24 hour) surveillance of a geosynchronous satellite or satellites, an economical space -based infrared sensor is proposed. This sensor would (1), take advantage of the vacuum of space to enable cooling of the telescope mirror surfaces for orders of magnitude reduction in telescope thermal emission and the associated noise floor that affects target signal to noise ratio, (2), potentially open wavebands blocked by the Earth’s atmosphere where satellite thermal emission remains strong (e.g., wavelengths of 13.5 m icrometers and longer; see Fig. 1), and (3), observe geosynchronous satellites with their “backs towards the sun”; that is, detect the thermal emission from the non -solar illuminated sides. (The only difficulty for this type of observation occurs at the e quinoxes with the sun directly behind the target; this will be discussed in additional detail, below). An alternative approach that achieves similar capabilities might comprise visible light sensors in polar orbits having large apogee distances, such that observations of geosynchronous targets made near apogee allow for the partial viewing of the illuminated satellite surfaces. II. Considerations of utility Below we mention some specific considerations for space -based infrared surveillance of that part of the geosynchronous belt that is invisible to visible light ground based sensors during the day. As is the case for observations using large, ground based telescopes, these observations are all based on unresolved detections, since targets would be “point sour ces” as viewed by such a system." @default.
• W2317942642 created "2016-06-24" @default.
• W2317942642 creator A5066968071 @default.
• W2317942642 date "2004-06-19" @default.
• W2317942642 modified "2023-10-05" @default.
• W2317942642 title "Improved Space Object Awareness with Advanced Sensing Technologies" @default.
• W2317942642 cites W1996383552 @default.
• W2317942642 cites W2004985062 @default.
• W2317942642 cites W2071606566 @default.
• W2317942642 cites W2083575121 @default.
• W2317942642 cites W2089486180 @default.
• W2317942642 doi "https://doi.org/10.2514/6.2004-5907" @default.
• W2317942642 hasPublicationYear "2004" @default.
• W2317942642 type Work @default.
• W2317942642 sameAs 2317942642 @default.
• W2317942642 citedByCount "1" @default.
• W2317942642 crossrefType "proceedings-article" @default.
• W2317942642 hasAuthorship W2317942642A5066968071 @default.
• W2317942642 hasConcept C107457646 @default.
• W2317942642 hasConcept C111919701 @default.
• W2317942642 hasConcept C127413603 @default.
• W2317942642 hasConcept C146978453 @default.
• W2317942642 hasConcept C154945302 @default.
• W2317942642 hasConcept C2778572836 @default.
• W2317942642 hasConcept C2781238097 @default.
• W2317942642 hasConcept C41008148 @default.
• W2317942642 hasConcept C77304879 @default.
• W2317942642 hasConceptScore W2317942642C107457646 @default.
• W2317942642 hasConceptScore W2317942642C111919701 @default.
• W2317942642 hasConceptScore W2317942642C127413603 @default.
• W2317942642 hasConceptScore W2317942642C146978453 @default.
• W2317942642 hasConceptScore W2317942642C154945302 @default.
• W2317942642 hasConceptScore W2317942642C2778572836 @default.
• W2317942642 hasConceptScore W2317942642C2781238097 @default.
• W2317942642 hasConceptScore W2317942642C41008148 @default.
• W2317942642 hasConceptScore W2317942642C77304879 @default.
• W2317942642 hasLocation W23179426421 @default.
• W2317942642 hasOpenAccess W2317942642 @default.
• W2317942642 hasPrimaryLocation W23179426421 @default.
• W2317942642 hasRelatedWork W1490259651 @default.
• W2317942642 hasRelatedWork W2049502930 @default.
• W2317942642 hasRelatedWork W2335758940 @default.
• W2317942642 hasRelatedWork W2389401594 @default.
• W2317942642 hasRelatedWork W2390261592 @default.
• W2317942642 hasRelatedWork W2417057293 @default.
• W2317942642 hasRelatedWork W2896904471 @default.
• W2317942642 hasRelatedWork W4246426965 @default.
• W2317942642 hasRelatedWork W4302070135 @default.
• W2317942642 hasRelatedWork W3106945349 @default.
• W2317942642 isParatext "false" @default.
• W2317942642 isRetracted "false" @default.
• W2317942642 magId "2317942642" @default.
• W2317942642 workType "article" @default.