Спутник ФКИ. CONTOUR. [Редактировать]

Задачей космического аппарата Контур является исследование с пролетной траектории сразу трех комет, и в первую очередь одной из самых знаменитых кометы Энке. Эту космическую странницу отличает самый малый среди известных комет период обращения, чуть больший трех лет. Казалось бы, после многочисленных пролетов вблизи жгучего Солнца она уже давно должна была истаять. Однако комета Энке по-прежнему жива, регулярно радуя профессионалов и любителей своей активностью. Контур встретится с космической долгожительницей в ноябре 2003 года, промчавшись на расстоянии 100 км от ее ядра. В это время запланировано получение снимков, спектров, данных по химическому составу комы и ядра, а также множество других исследований.
Второй целью Контура станет комета Швассмана-Вахмана 3, известная тем, что в 1995 году ее ядро распалось на три фрагмента. Как и почему это произошло, ученые смогут узнать в июне 2006 года. Наконец, последняя комета на пути Контура - комета Д Арре, встреча с которой должна состояться в августе 2008 года. Она известна еще середины прошлого века и практически в каждом своем появлении поражала ученых своей поистине неиссякаемой активностью. Какие процессы позволяют ей столь успешно оставаться в блестящей форме ? Вот еще одна загадка, ответ на которую попробует разузнать Контур.
Впрочем, до этого дело может и не дойти: из трех упомянутых нами комет обязательной в программе полета является лишь комета Энке. Если во время выполнения задания будет обнаружена новая интересная комета, то аппарат тут же перенацелят на ее перехват. Сейчас разработчики Контура очень жалеют, что он не был запущен в 1995 году, ведь тогда ему удалось бы нанести визит к комете Хейла-Боппа.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1Comet Nucleus TourНайтиНайти
227457НайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - США
2Страна производитель - США
3Тип оператора(владельца) - государственный

Новостная лента[Найти информацию в новостях] [Найти информацию в документах]

#Новостная лента.
12002-08-15. Потеря связиТэги: CONTOUR
22002-08-18. NASA потеряла очередной искусственный спутник.
Ученые NASA потеряли связь с космическим зондом стоимостью 159 миллионов долларов. Получив команду начать операцию по смене орбиты, аппарат CONTOUR так и не смог отправить на Землю данные о результатах проведенных процедур. На протяжении вот уже нескольких часов ученые не могут добиться от зонда какого-либо отклика. Несмотря на это, они продолжают надеяться, что маневр, котором необходимо было задействовать ракетные двигатели зонда, закончился удачно. Возникшие непредвиденные обстоятельства пришлись на один из самых важных этапов миссии аппарата CONTOUR. Покинув в ходе маневра орбиту Земли, он должен был отправиться на встречу с кометами Энке и Швассмана-Вахмана-3.Тэги: CONTOUR

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг970
2Масса (научной аппаратуры), кг387

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2002-034A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (аппарат), млн. долл.159

Информация об удачном запуске

#ХарактеристикаЗначение
1Дата пуска2002-07-03 at 06:47:41 UTC
2Полезная нагрузка 1xCONTOUR
3Ракета-носитель 1xДельта 2 7425

Найдено 1000 документов по запросу «CONTOUR». [Перейти к поиску]


Дата загрузки: 2018-04-17
Скачать документ
Скачать текст
0.15/5
... acquisition: Sampling data elements: the contour, texture and in all three.... The models are usually active contour models: A technique formed by using... alternative approach to traditional active contour tracking: A binocular stereo . One of... the a video sequence using active contour models . object of interest. If... subtending convex parts of the contour of the figure X and γk (X) are... subtending plane parts of the contour of figure X, then the angularity..., making the motion of a homogeneous contour seem locally ambiguous. Within that... models from examples. apparent contour: The apparent contour of a surface S in 3D... code: An efficient method for contour coding where an arbitrary curve.... C 51 contextual method: Algorithms that contour representation: See take into account... found features in their contour tracing: See contour linking . search for new... of two continuous signals. contour tracking: See contour linking . In 2D image... f and h is: contours: See object contour . g(x, y) = f (x, y) ⊗ h(x, y) = ∞ ∞ f (τu , τv )h(x−τu , y −τv )dτu dτv contrast: 1) The difference in −∞ −∞ brightness.... contour analysis: Analysis of outlines of image regions. C= i j (i − j)2 P [i, j] contour following: See contour linking . contour grouping: See contour linking . contour length: The length of a contour... an image contour in pixels. See also arc length . contour linking: Edge... the goal of contour linking. contour matching: See curve matching . contour partitioning: See... blurring of detail. crack code: A contour description method that codes not... zero-crossing points of a planar contour as it evolves during smoothing... length parameter on the original contour and the vertical axis representing... for deriving a polygonal approximation of a contour in which a straight line estimate... distortion model, for on the contour) until the distance instance k1... . See also and the actual contour is below some pincushion distortion... object by a single geodesic active contour. recognition. geodesic distance: The length... geodesic active contour: An compression of geometric structures active contour model similar... are used extensively in Initial Contour Final Contour stereo vision (e.g., the epipolar.... A typical example is a geodesic active contour model. geometric model: A model that... object of known brightness. illusory contour: A perceived border where there is... image data. See also subjective contour. For example the following diagram... that invariant contour function: The preserves distances. Thus the contour function characterizes...: Isophotes are computed from the contour functions. curves of constant image... order to See also occluding contour . understand the 3D structure of... at points (x(s), y(s)) along the object contour. The pq th moment is... line moments uniquely determine the contour. LINE INTERSECTIONS line junction: The... system: (L,H,W) H L 157 158 O object contour: See occluding contour . object grouping: A general term... the correct image positions. occluding contour: The visible edge of a smooth... from an observer . The occluding contour defines a 3D space curve on... also be called the occluding contour. The contour can often be found... occlusions that may include OCCLUDING CONTOUR occluding contour detection , determining the relative... sides of an occluding contour analysis: A occluding contour , searching for general term... occlusion and of the occluding contour , 2) inference depth order, etc. of... occupancy grid: A map construction occluding contour and 3) determining technique used mainly... the occluding contour. squares or cubes representing the scene occluding contour detection.... The shape variations of the contour in a everything that is visible..., piecewise linear, the epipoles . 2D contour. Squares, rectangles and pentagons are... contour. If closed, it becomes a polygon . See also polycurve , contour analysis and contour...: A contour representation giving the distance, r, of each point of 188 R the contour... rotation-invariant comparison of contour. See also contour , shape representation . s r(s) s=0 r(0) X 189 infinite... imaginary (e.g., an radius vector function: A contour or boundary representation based about... is a substantial (see shape from contour and following topic in computer... C D C in the interior of a closed contour identifying a region . For instance, one... a closed of segmentation techniques producing contour in a binary image with zeros... center of mass ), the region’s contour (e.g., a list of 2D region growing... also sonar . silhouette: See object contour . signal coding system: A system for... S skew symmetry: A skew symmetric contour is a planar contour such that every straight... symmetry axis of the contour, intersects the contour at two points equidistant... pattern. Morphological operations on a subjective contour: An edge source image combine... is bounded partially by a subjective contour. subpixel edge detection: Estimation of... camera and the associated image contour imposes a constraint on the shape...



Дата загрузки: 2018-04-17
Скачать документ
Скачать текст
0.18/5
... Contents L IST OF F IGURES 1.1 1.2 1.3 2.1 2.2 (a) The contour Γ (e) (θ ) surrounding the path P (e) (θ ). (b) Three saddle... along the adjacent contour C (m2 ) . . . . . . . . . 32 The steepest descent contour C (0) (θ ) associated with... C (1) (−π ) and C (−1) (π ). . . . . . . 53 The steepest descent contour P (o) (θ ) associated with the Anger– Weber... of Figures 2.3 The steepest descent contour C (0) (θ ) associated with the gamma function... between C− π2 and C+ 3.1 The steepest descent contour C (0,0) (θ ) associated with the Hankel function... C (1,1) − π2 and C (1,0) 3π 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 3.2 The steepest descent contour C (0) (θ ) associated with the Hankel function... C (1) 3π 2 and 3π 1 (− ) C − 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 3.3 The steepest descent contour P (o) (θ ) associated with the Anger– Weber... C (1,0) − π2 and C (0,−1) π2 . . . . . . . . . . . . . . . . . 201 3.4 The steepest descent contour P (o) (θ ) associated with the Anger– Weber... Figures 3.5 xv The steepest descent contour P (0) (θ ) associated with the Anger– Weber... the path C ( X ) (θ ) is a doubly infinite contour passing through X. In the latter... point of f (t). As θ varies, the contour P (e) (θ ) varies smoothly until it encounters... saddle point of f (t) on the contour P (e) (θ ), the quantity g (t (s/z)) /f ′ (t (s/z)) is an analytic... integral T (e) (z), +∞ T (e) ( z ) = 0 e− s 1 2πi Γ (e) (θ ) g (t) dtds, f (t) − f (e) − s/z where the infinite contour Γ (e) (θ ) encircles the path P (e) (θ ) in the... can define Γ (e) (θ ) as a finite loop contour surrounding t (s/z) and consider the limit... ) e t ( m1 ) Γ (e) ( θ ) 5 t ( m3 ) ∆(e) P (e) ( θ ) C ( m3 ) (a) (b) Figure 1.1. (a) The contour Γ (e) (θ ) surrounding the path P (e) (θ ). (b) Three saddle..., for a critical value of θ, the contour P (e) (θ ∗ ) splits into two parts: a path... denominator 1 − s/z ( f (t) − f (e)) inside ∆(e) is precisely the contour P (e) (θ ), which is wholly contained within... saddle points of f (t) on the contour P (k) (θ ) other than t(k) , the quantity 1 1 2s...) where Γ (k) (θ ) is an infinite loop contour which encloses P (k) (θ ) in the anti1... 1 can define Γ (k) (θ ) as a finite loop contour encircling t(s/z 2 ) and consider the limit... equation (1.39) with t(s/z 3 ) ∈ P (k) (θ ). Since the contour P (k) (θ ) does not pass through any... T (k/3) (z) = +∞ 0 e− s 3 3 2πi g (t) Γ (k) (θ ) 1 1 ( f (t) − f (t(k) )) 3 − s/z 3 dtds, (1.41) where the infinite contour Γ (k) (θ ) encircles the path P (k) (θ ) in the... take Γ (k) (θ ) to be a 1 finite loop contour surrounding t(s/z 3 ) and consider the limit.... The contour Γ (k) (θ ) in the sum is shrunk to a small closed contour encircling... range (1.81), the steepest descent contour P (e) (θ ) varies in a continuous manner, and...) (ii) (i) t (0) C (−1) (π ) t(−1) Figure 2.1. The steepest descent contour C (0) (θ ) associated with the modified Bessel... of T (0) (u). Indeed, by shifting the contour C (1) (−π ) downwards by πi, we establish that...) 0 (i) (iv) (v) C (−1) t(−1) π 2 Figure 2.2. The steepest descent contour P (o) (θ ) associated with the Anger– Weber... function Kν (u). Indeed, by shifting the contour C (0) − π2 downwards by π2 i, we deduce that... 2π. We required that the adjacent contour C (m) (−σ0m ) contains exactly one saddle...) (vii) t(−3) Figure 2.3. The steepest descent contour C (0) (θ ) associated with the gamma function... T (0) ue− 2 i , respec(1) (0) tively. Indeed, the contour C− π2 is congruent to C− π2 but is...) t(1,0) (iii) Figure 3.1. The steepest descent contour C (0,0) (θ ) associated with the Hankel function... equal to T (1,0) ue− 2 i . Indeed, the contour C (1,1) − π2 is congruent to C (1,0) − π2 but is... monotonic(0,0) π ity of x on the contour C2 2 . We estimate 1/ |1 + s/ ( ν f ( t )) | via (2.36...), namely in − π2 < θ < 3π 2 (note that the contour C counters the saddle t(1) when θ = − π2 ). Following...) t (0) (i) (ii) C (−1) − 3π 2 t(−1) Figure 3.2. The steepest descent contour C (0) (θ ) associated with the Hankel function... steepest descent contour C 2 in the right half-plane. (The contour C (0) π2 is congruent... any s > 0, we have 2 0< (0) on the contour C2 integration, π 2 1 − (s/ (|ν| i f (t))) 3 1 − (s/ (|ν| i f (t)))2 <1 (3.106) and so...) 0 (i) (iv) (v) C (0,−1) t(0,−1) π 2 Figure 3.3. The steepest descent contour P (o) (θ ) associated with the Anger– Weber... 2 i sec β . Indeed, denoting by C (1,0) − π2 the contour which is congruent to C (1,0) − π2 but...) 0 C (1,0) (i) (iv) π 2 (v) t(1,0) Figure 3.4. The steepest descent contour P (o) (θ ) associated with the Anger– Weber...) t (0) (i) (iv) (v) C (−1) 3π 2 t(−1) Figure 3.5. The steepest descent contour P (0) (θ ) associated with the Anger– Weber... the Hankel function Hν (ν). Then the contour C (1) − 3π 2 is congruent to P (0) − π2 ∪ P (0) 7π but is... t. Let C (0) (θ ) be the steepest descent contour through the saddle t(0) = 0 which is... steepest descent contour C 2 in the right half-plane. (The contour C (0) π2 is congruent...



Дата загрузки: 2018-04-17
Скачать документ
Скачать текст
0.17/5
... on its parametrizations (gradient threshold, contour thinning). This is why the... iterative filtering approach to integrate a contour point in the processed segment... direction δ Tracking normal to the contour.For each point pt and... incorrespondent the δThis normal to contour. NFA(r, constitutes an NFA(r, ε-meaningful... function the orientation of the contour. The 2.2 Tracking t+1Segment t+1 t t the For... the direction δ normal to thealgorithm contour. implemented. prior edge extracton is... the to orientation of the contour. The algorithm is exemplified in... the the orientation ofisline the contour. The t p in line l(r)computed . A The... direction δζon normal tot+1 thein contour. implemented. No prior edge extracton... theon direction δis normal to contour. implemented. prior edge required it... of the orientation of the contour. The p in line l(r) . A 1D search... the direction δ normal to the contour. j δ algorithm is exemplified in figure... the direction normal to tthe contour. 0)p∗ M -100 -100 δon t�t . A 1D search... of the orientation of the contour. The t t j∈[−J,J] implemented. No prior implemented... the direction δ normal to the contour. j δ implemented. No prior edge extracton... the direction δ normal to the contour. p direction in t ν(p ) ν(Q ) point j t+1 For each... function of the of the contour. The ), line algorithm exemplified figure... using the orientation the extremities contour. t+1 t � is tt tt t exemplified t algorithm... δofnormal to(14) the The contour. Qgiven = arg maxmask ζin with..., normal the contour. k points whichpinterval the segment extremities are extracted. �I �contour. convolution value computed Q ,j using M which the orientation of the contour. The... direction normal the jj p j contour. j at jthe δ defined δcontour. j, j jline jby: δvalue... of the orientation of the contour. The �tis) ∗function t+1 t1.j∈[−J,J] t+1 A For... ) j is exemplified in figure 1. t+1 j∈[−J,J] �mask �contour. t+1 t the the new position given... The orientation of(14) the contour. The �t The �by:the t+1 ∗ produced... function of orientation of the contour. Qj , convolution using mask M is... the orientation of Thus, the contour. The Q =computed arg max ζQ with... is function of the orientation contour. The Thus, the position ppt...



Дата загрузки: 2018-04-17
Скачать документ
Скачать текст
0.17/5
... management works such as contour trenches, terracing, contour bunds, boulder checks, gabion... (6) PL PL (5) SUNKEN PONDS CONTINOUS CONTOUR TRENCHES / FURROWS, STAGGERED TRENCHES, BOX... plants & in M. Length (6) CONSTRUCTION OF CONTOUR/GRADED BUND/FARM BUNDING IL... RELATED WORKS CONTOUR TRENCH In the ridge area of a watershed, a contour trench... soil erosion. A contour trench is a trench dug along a contour line. A contour line is... trenches were not to follow a contour, such digging could actually increase... the slope of the land. Contour trenches are constructed in non... per cent). Unit cost of a contour trench of dimensions 0.5m*0.5m... cent of the total cost. CONTOUR BUND Contour bunds are a simple and... any watershed. A contour bund is a bund constructed along a contour line. A contour line is... time within the bund. Like contour trenches, bunds also collect the... is, therefore, important to combine contour bunds with appropriate vegetative measures... 64 MGNREGA Operational Guidelines-2014 Contour bunds are constructed in arable... contour bunds. Therefore, construction of waste weir should be part of contour bunds. For a contour bund of height 0.6m... should be made on the contour line. However, farmers do not... as it creates several problems. Contour bunds divide the field into... & gravel road • (BRGF, PMGSY) 7 Forestry • • • • Contour trench Pits Fencing Watering • • • • • Nursery....1 If yes is it OK - Contour trenches - Contour bunds - Boulder checks - Gabion... Legends in Maps Concept of Contour Lines and its Uses Identifying.... Ridge Area Treatment: Contour Trenching Ridge Area Treatment: Contour Bunding Planning Ridge...



Дата загрузки: 2017-12-26
Скачать документ
Скачать текст
0.06/5
... of Ioannina, Ioannina, Greece 1 IMAGE CONTOUR SEGMENTATION IN HARDWARE The use... Synthesis for hardware generation of a contour-based image segmentation method is... commercial RTL synthesizers. Keywords: Image Contour Segmentation, High Level Synthesis, Custom... implementation of a computationally demanding, image contour segmentation algorithm in hardware. In...: the grayscale image I, the initial contour ϕinitial , the three weighting coefficients... method’s output is the final contour, ϕ final . 2 LITERATURE REVIEW The desired... matching deformable curves to the contour objects by means of a suitable...) applied to the image. Active contour models, (or deformable models) which... intensities inside and outside the contour respectively and in the optimal... look for the best separating contour. The term is of high... images. Finally, the Geodesic Active Contour functional which is sought to... reported earlier in [13]. This contour-based method, has been shown...», a rather challenging one. The final contour is superimposed on the input... (weight for the geodesic active contour term); – w2=4.0 (weight for the... by means of the final contour array elements’ signs image. Note... in MatLab with the final contour appearing in red and parameter... grayscale or binary images (initial contour and input images) and any...: – read input image (I) and initial contour ( ϕ ) arrays; – initialize some essential parameters...: a) set the previous contour to be the current contour; b) compute the minimal... images (Fig. 6); d) compute the new contour array by combining the three... function) and compute the new contour array using fast–marching (previous... is a good estimator of the contour orientation; minimal variance functional, which... mean intensity values; geodesic active contour functional, a regularization term for other... required testbench. Test vectors (initial contour and input images) were created.... – P. 187–217. 5. Kass M. Snakes: Active contour models / M. Kass, A. Witkin, D. Terzopoulos // Int... Synthesis for hardware generation of a contour-based image segmentation algorithm / M. Dossis... M., Witkin A. and Terzopoulos D. Snakes: Active contour Technologies (IDT). Zilina, Slovakia, July...



Дата загрузки: 2017-12-26
Скачать документ
Скачать текст
0.04/5
... mission, the Comet Nucleus Tour (CONTOUR). Shortly after the successful NEAR...-3 and analyze their material. The CONTOUR project was organized much like... capabilities. In the case of CONTOUR, however, the spacecraft disappeared. As... NEAR spacecraft, project officials on CONTOUR relied upon an outside contractor... was used on CONTOUR. Two aerospace companies prepared CONTOUR’s solid rocket motor... on manufactured goods. On the CONTOUR mission, a research and development undertaking... rocket motor to push the CONTOUR spacecraft out of its Earth... confirm this scenario because the CONTOUR project team did not install... in both cases. With the CONTOUR mission, APL officials attempted to... CONTOUR spacecraft for about $70 million. The overall cost of the CONTOUR... reduced to $154 million for CONTOUR.15 Officials at the Jet...; Aspere-3; and the ill-fated CONTOUR. They followed with two additional.... 11. NASA, Comet Nucleus Tour CONTOUR Mishap Investigation Board Report, 31...). 13. NASA, Comet Nucleus Tour CONTOUR Mishap Investigation Board Report, p. 9. 14... Sequence CCD charge-coupled device CONTOUR Comet Nucleus Tour CPM critical... Working Group, 8 Comet Nucleus Tour (CONTOUR), 54–55 Johnson, Clarence “Kelley...



Дата загрузки: 2017-12-26
Скачать документ
Скачать текст
0.11/5
...,0.90,0.95,0.975), show=c("filled.contour","contour","image","none"), col=topo.colors... of "filled.contour", "contour", "image", or "none". Defaults to "filled.contour". show.points... kernel density estimate ci2d(x,y) # filled contour plot ci2d(x,y, show.points=TRUE...=TRUE) # contour plot ci2d(x,y, show="contour", col="black") ci2d(x,y, show="contour", col="black...$duration, geyser$waiting, show="contour", col="black") # call contour() directly, show the...$duration, geyser$waiting, show="none") contour(est$x, est$y, est$cumDensity, xlab...$y, na.rm=TRUE) # show full contour # range for duration # range for... contour (line) plot ... contour( h2d$x, h2d$y, h2d$counts, nlevels=4 ) ## for a filled contour plot ... filled.contour( h2d...



Дата загрузки: 2017-12-26
Скачать документ
Скачать текст
0.34/5
... used for plotting the threshold contour line (TCL) of 1981, 1989... used for plotting the threshold contour line (TCL) of 1981, 1989... of the contour line were distinguished. reading). zones of the contour line... (2) 1989(2) contour; (3) 1981 Threshold(0.5 (0.5 g/L) and salinity vulnerability (1) contour; 1997 contour; 1989 contour; contour; (4) inland zone... zone with salinity greater (3) 1981 contour; (4) inland zone with salinity lower... zone (spanned by the contour threshold contour line over time). In the... of sufficient density to plot contour lines are not available after...



Дата загрузки: 2017-12-26
Скачать документ
Скачать текст
0.06/5
... in the same way that contour lines on a map are always... join small breaks in a defining contour (image courtesy of C.J. Solomon, M. Seeger... together broken lines which form a contour delineating a region of interest. For... a number of breaks in the contour defining the impact region. In... contour is closed. (2) Fill in the background pixels enclosed by the contour.... It tends to smooth the contour of a binary object and breaks... the region enclosed by the contour which is generated by rolling... boundary of object A. The resulting contour defines the boundary of the... the boundary defined by the contour as B is rolled around the... join small breaks in defining contour, 205 erosion, 200 201 application...



Дата загрузки: 2018-04-17
Скачать документ
Скачать текст
0.15/5
... получения лучшего обзора) с применением метода contour inside (контур внутри). 10-70... получения лучшего обзора) с применением метода contour inside (контур внутри). 10.5.3.1 Работа... случае, если выбран метод формирования [Contour Finder - Semiauto Trace] (Искатель контура...). Выбор чувствительности Регулируют чувствительность алгоритма Contour Finder (Искатель контура). Советы и подсказки...-129 10.12.4.2 Поиск контура Contour Finder (Искатель контура VOCAL) — это... Руководство и предостережения по использованию VOCAL Contour Finder (Поиск контуров VOCAL): • • • Точность... контура при помощи функции VOCAL Contour Finder (Поиск контура VOCAL): 1. Искатель...-121 1. Нажмите клавишу контурного режима [Contour Finder - Trace] (Искатель контура — обведение... сенсорной панели. 4. Настройте чувствительность алгоритма Contour Finder. Примеч. Для удаления только... режимы), нажмите клавишу режима контура [Contour Finder - Semiauto Trace] (Искатель контура... сенсорном экране. Появится следующее меню: Contour (Контур) Сегментации отображаются контурной линией...