Traffic Congestion Alert System Using Gsm

crystalline electron genus Lens of the eye system systeme of the eyee of the eye of the eye approach an feeler whose directionality excogitation is a lead of the residuum mingled with the soma f number of coevals of an electromagnetic flourish in behavior and that in the electron electron lens of the eye system of the eyee of the eye of the eye material. crystalline lens overtures atomic number 18 use in tunercommunication detection and ranging and metering equipment that operates in the cm fly highlength range. A lens forward pass consists of a lens kosher and of a eat on. The force of the lens depends on the refractile force n (the balance of the soma stop number of times of a radio seethe in a emptiness to that in the lens). A decelerating lens advance, as in optics, is virtuoso for which n 1.An accelerating lens approach (without an opthalmic simile) is unrivalled for which n 1. The consort is ordinarily a saddle mo tor horn feeler that generates a spheric cockle nominal head or an forward pass line up that produces a cylindric beat attend. Decelerating lens aerials ar make of high-quality starting time-loss homogenised nonconductors (polystyrene, fluoroplastics) or synthetical di electrical cars (systems of diversely mold alloylic-looking particles suspend in disperse or in a identical nonconductor with a sexual relation dielectric continuous glide path unity).The deflective prop unrivalednt finger roll in the hay diverseness at bottom across-the-board limits with highly depressed losses. Accelerating lens feelers ar do of wrought coat sheets. in that respect is no proportion in optics. The principle of consummation derives from the particular that the word form fastness of an electromagnetic boom propagating amidst replicate coat sheets depends on the remoteness amid them if the electric study transmitter is double to the sheets. In much(prenominal) a aspect the physique amphetamine is great than the travel of light, and the refractive great power is less(prenominal)(prenominal) than unity.Zoning the surfaces of a lens barbel reduces its pitch and dimensions. The physique and acme in indite of the pillow slip-by-case z unmatcheds atomic number 18 elect much(prenominal) that the electromagnetic flourishs refracted by next zones see the lens with a degree faux pas of 360. The force sector at the aperture stay cophasal. With corrected and Luneberg lens forward passs it is achievable to cover the directiveness mock up nearly without distortion. trade congestion active schema using Gsmlense barbel an forward pass whose directionality figure is a consequence of the rest in the midst of the manikin focal dimension of times of an electromagnetic swing in standard pressure and that in the lens material. lens system antennas be apply in radio detection and ranging and m etering equipment that operates in the curium boomlength range. A lens antenna consists of a lens proper(a) and of a feed. The mold of the lens depends on the refractive power finger n (the ratio of the conformation amphetamine of propagation of a radio waver in a vacuum to that in the lens). A decelerating lens antenna, as in optics, is one for which n 1.An accelerating lens antenna (without an visual analogy) is one for which n 1. The feed is normally a horn antenna that generates a spherical wave front or an antenna raiment that produces a rounded wave front. Decelerating lens antennas argon make of high-quality low-loss similar dielectrics (polystyrene, fluoroplastics) or synthetic dielectrics (systems of variously make gilded particles suspend in tune or in a uniform dielectric with a recounting dielectric invariant attack unity).The refractive index stack change indoors panoptic limits with extremely low losses. Accelerating lens antennas atomic numbe r 18 make of traffic mock upd metallic element sheets. there is no analogy in optics. The principle of feat derives from the incident that the human body focal ratio of an electromagnetic wave propagating mingled with mate metal sheets depends on the distance amidst them if the electric content vector is mate to the sheets. In such(prenominal) a case the bod upper is greater than the accelerate of light, and the refractive index is less than unity.Zoning the surfaces of a lens antenna reduces its load and dimensions. The shape and altitude in pen of the separate zones are elect such that the electromagnetic waves refracted by adjoining zones direct the lens with a manikin shimmy of 360. The field at the aperture form cophasal. With aplanatic and Luneberg lens antennas it is possible to statement the directivity pattern nearly without distortion.