Method for adjustment of radiolocation station antenna |
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IPC classes for russian patent Method for adjustment of radiolocation station antenna (RU 2262117):
    
 Radio engineering training device / 2260193
Device has radio-location station, first high-frequency generator, modulator, first counter, scanning generator, second counter, heterodyne, first mixer, first intermediate frequency amplifier, first amplitude detector, video-amplifier, third counter, cathode-ray tube, second, third and fourth high-frequency generators, first and second adders, switches, phase-rotators and on 90°, second mixer, second intermediate frequency amplifier, multiplier, narrow-band filter, second amplitude detector, key and frequency converter.
 Radio-signal dynamic memory device having series binary fiber- optic system / 2255426
In order to enhance identity of copy generation while retaining ability of controlling input radio signal replication process, proposed device is provided with newly introduced (N -1) fiber-optic four-terminal networks, each of them incorporating Y-type internal adding and separating fiber-optic directional couplers.
 Mode of controlling working capacity of airborne receiver indicator of satellite radio navigational system / 2254591
The mode is that the altitude HRA of the flight of a flying vehicle is measured with the help of installed on it a radio altimeter (RA), the altitude hr of an area above which a flying vehicle flies at the moment of the altitude measuring using for this purpose data about planned coordinates from the output of the receiver indicator of the satellite radio navigational system and digital map of an area, an absolute altitude Ha= HRA +hr, is calculated and compared with the altitude HRI, taking from the output of the receiver indicator and a signal of its working capacity is formed if |Ha- HRI| is smaller than the installed threshold Th.
 Generator of reflected radar signals from disturbed sea surface / 2253130
The device has a control panel, memory unit, preliminary recording control unit, unit for formation of carrier relative coordinates, readout and synchronizing unit, on-line memory unit, unit for formation of video signal, unit for formation of carrier polar coordinates, noise formation unit.
 Target fluctuating signal generator / 2253129
The device having a control panel, storage unit, synchrosignal generator, first, second and third on-line memories, unit for formation of target relative coordinates, unit for formation of the maximum target signal intensity, first, second, third and fourth synchronizers, unit for formation of the current intensity of the target signal, digital-to-analog converter, noise generator, adder uses also a correlator, first and second detectors, first and second multiplier units, first and second random number generators, which provides for formation of amicably fluctuating and quickly fluctuating bursts of pulses reflected from the radar targets, internal noise of the receiver and synchronizing signals at the output of the radar receiver in the rate of radar functioning and with due account made for motion of the ship-carrier.
 Method of adjustment of optical axis of viewfinder and electrical axis of aerial / 2252427
Viewfinder is disposed at specific distance from mechanical axis of aerial. Viewfinder is tightly connected with antenna aperture plane. Optical axis of viewfinder is directed in parallel to mechanical axis of aerial. Then electrical axis of aerial is guided to phase center of ancillary aerial which is disposed together with geodetic mark onto post. Optical axis of viewfinder is guided onto geodetic mark. Geodetic mark is tied to angular position detectors and stays apart from phase center of ancillary aerial for distance being equal to shift of viewfinder from mechanical axis of aerial to the plane of normal optical axis of viewfinder. Optical axis of viewfinder is guided onto center of aperture of ancillary aerial. Difference in coordinates is determined by angle of location of initial and final position of viewfinder optical axis. Sword is turned around axis being perpendicular to plane of sword and crossing center of ancillary aerial aperture by angle determined by the relation given in the description of the invention. Electrical axis of aerial is guided onto phase center of ancillary aerial and optical axis of viewfinder is guided onto geodetic mark.
 Method of inspecting parameters of aerial systems / 2254585
Method can be used for tuning and inspecting code on-board detectors of transportation vehicle automatic identification telemetric system. Section of reference aerial is calibrated in echo-free reference chamber inside which non-modulated oscillations are excited by connecting load in form of light-emitting diode cell to reference aerial. Fiber-optic section provided with light-receiving device and pre-calibrated indicator are also connected to reference aerial. Tested aerial is placed into the field induced by oscillator and measuring aerial inside working echo-free medium. The field is pre-calibrated by attenuator corresponding to readings of indicator of the reference aerial placed in the field before placing tested aerial inside the field.
Method of adjustment of optical axis of viewfinder and electrical axis of aerial / 2252427
Viewfinder is disposed at specific distance from mechanical axis of aerial. Viewfinder is tightly connected with antenna aperture plane. Optical axis of viewfinder is directed in parallel to mechanical axis of aerial. Then electrical axis of aerial is guided to phase center of ancillary aerial which is disposed together with geodetic mark onto post. Optical axis of viewfinder is guided onto geodetic mark. Geodetic mark is tied to angular position detectors and stays apart from phase center of ancillary aerial for distance being equal to shift of viewfinder from mechanical axis of aerial to the plane of normal optical axis of viewfinder. Optical axis of viewfinder is guided onto center of aperture of ancillary aerial. Difference in coordinates is determined by angle of location of initial and final position of viewfinder optical axis. Sword is turned around axis being perpendicular to plane of sword and crossing center of ancillary aerial aperture by angle determined by the relation given in the description of the invention. Electrical axis of aerial is guided onto phase center of ancillary aerial and optical axis of viewfinder is guided onto geodetic mark.
 Device for changing area of reflecting surface / 2244940
Cavity of radio-transparent envelope which has to be model of tested object is partially filled with electrically conducting liquid. Level of liquid is controlled by piston pump and measured by level meter. Radio-transparent cavity has a shape of circular cylinder with preset sizes which shape allows reproduce "selection" of standard reflectors in form of circular cylinders at smooth change in level of electrically conducting liquid. Values of dissipation effective areas of the cylinders can be calculated with high precision. Radio-transparent envelope can have shape of cylindrical pipe.
 Device for measuring effective scattering cross-section of object / 2244939
Device for measuring effective scattering cross-section of radio-location objects has receiving-transmitting unit, registrar, stand mounted for rotation and provided with fixing unit which is used for mounting test object oriented in such a manner that normal to flat front of electromagnet wave radiated by receiving-transmitting unit belongs to preset plane of rotation of object. Precision inspection of measurement of angular diagram of effective scattering cross-section of objects provided due to the fact that radio-transparent envelope is rigidly fixed on the surface of object in parallel with preset plane of rotation of object. Radio-transparent envelope is made in form of thin straight cylinder of preset size. Cavity of envelope is partially filled with e4lectrically conducting liquid. Measured maximal level of effective scattering cross-section of main lobe of radio-transparent cylinder allows to find angle of inclination of plane of rotation of object.
Device for measuring effective scattering cross-section of object / 2244939
Device for measuring effective scattering cross-section of radio-location objects has receiving-transmitting unit, registrar, stand mounted for rotation and provided with fixing unit which is used for mounting test object oriented in such a manner that normal to flat front of electromagnet wave radiated by receiving-transmitting unit belongs to preset plane of rotation of object. Precision inspection of measurement of angular diagram of effective scattering cross-section of objects provided due to the fact that radio-transparent envelope is rigidly fixed on the surface of object in parallel with preset plane of rotation of object. Radio-transparent envelope is made in form of thin straight cylinder of preset size. Cavity of envelope is partially filled with e4lectrically conducting liquid. Measured maximal level of effective scattering cross-section of main lobe of radio-transparent cylinder allows to find angle of inclination of plane of rotation of object.
Device for changing area of reflecting surface / 2244940
Cavity of radio-transparent envelope which has to be model of tested object is partially filled with electrically conducting liquid. Level of liquid is controlled by piston pump and measured by level meter. Radio-transparent cavity has a shape of circular cylinder with preset sizes which shape allows reproduce "selection" of standard reflectors in form of circular cylinders at smooth change in level of electrically conducting liquid. Values of dissipation effective areas of the cylinders can be calculated with high precision. Radio-transparent envelope can have shape of cylindrical pipe.
Method of adjustment of optical axis of viewfinder and electrical axis of aerial / 2252427
Viewfinder is disposed at specific distance from mechanical axis of aerial. Viewfinder is tightly connected with antenna aperture plane. Optical axis of viewfinder is directed in parallel to mechanical axis of aerial. Then electrical axis of aerial is guided to phase center of ancillary aerial which is disposed together with geodetic mark onto post. Optical axis of viewfinder is guided onto geodetic mark. Geodetic mark is tied to angular position detectors and stays apart from phase center of ancillary aerial for distance being equal to shift of viewfinder from mechanical axis of aerial to the plane of normal optical axis of viewfinder. Optical axis of viewfinder is guided onto center of aperture of ancillary aerial. Difference in coordinates is determined by angle of location of initial and final position of viewfinder optical axis. Sword is turned around axis being perpendicular to plane of sword and crossing center of ancillary aerial aperture by angle determined by the relation given in the description of the invention. Electrical axis of aerial is guided onto phase center of ancillary aerial and optical axis of viewfinder is guided onto geodetic mark.
Method of inspecting parameters of aerial systems / 2254585
Method can be used for tuning and inspecting code on-board detectors of transportation vehicle automatic identification telemetric system. Section of reference aerial is calibrated in echo-free reference chamber inside which non-modulated oscillations are excited by connecting load in form of light-emitting diode cell to reference aerial. Fiber-optic section provided with light-receiving device and pre-calibrated indicator are also connected to reference aerial. Tested aerial is placed into the field induced by oscillator and measuring aerial inside working echo-free medium. The field is pre-calibrated by attenuator corresponding to readings of indicator of the reference aerial placed in the field before placing tested aerial inside the field.
 Method for adjustment of radiolocation station antenna / 2262117
Method includes using auxiliary antenna and geodesic mark, linked with indicators of angular position of target antenna, viewfinder is positioned near opening of subject antenna, rigidly linked to opening plane of subject antenna. Flat metallic screen is inserted, to which emission from auxiliary antenna is directed, auxiliary antenna and geodesic mark as light source are positioned behind subject antenna at remote zone distance. Electric axis of subject antenna is directed using its rotation gear according to one of minimum methods to phase center of auxiliary antenna, screen is mounted so, that beams, falling o it from auxiliary antenna and geodesic mark, were reflected respectively to whole plane of opening of target antenna and inlet eye of viewfinder. Angular deflection of optical axis of viewfinder from direction to center of image of geodesic mark on screen determines adjustment of target antenna.
 Method of measurement of complex excitement amplitude of channels of phased array / 2267795
Method can be used for measurement of directional pattern of phased arrays and detection of damaged channels of phase array when using standard equipment of radar installations which have phased arrays as a part of equipment. Super-high frequency control signal is generated and irradiated by motionless probe at the direction of phased array. Control signal is received by phased array at alternate modulation of signal phase of each channel of phased array and signal is subject to coherent conversion to video frequency followed by selection of quadrature-phase component. Channel is switched to any phase state only once and at any phase state of the channel the analog signal is transformed into digital one K times (value of K varies from 100 to 10000 and higher depending on number of channels). Digital indications are rearranged in such a way that phase of signal of commutated channel in adjacent readings would differ for discrete value of switching of channel's phase. Signal spectrum is calculated. All the spectral components are reduced excluding components of useful signal which number equals to number of phase states of channel. Spectral component corresponding to zero frequency is reduced to zero. Fourier anti-transform is calculated. The sequence calculated has to represent complex excitement amplitudes for any phase state of channel.
 Device for measurement of amplitude-phase field distribution in receiving aerial aperture / 2275646
Device for measurement amplitude-phase field distribution in receiving aerial aperture has super-high frequency generator. Output of the generator is connected with measuring probe and with first input of amplitude-phase meter. Output of the latter is connected with first input of data collection and control device. First input of the latter is connected with first input of first computational unit intended for memorizing measured relations of signal amplitudes and phases and for computing amplitude-phase distribution. Device for measurement amplitude-phase distribution has turn unit being mechanically connected with tested aerial which has output connected with second input of amplitude-phase meter. Data collection and control unit serves for forming and outputting control commands to turn unit and for controlling measurement device in total. Device also has second computational unit intended for computing coordinates of points of measurement of tested aerial's transmission factor vector correspondingly to optimal spatial structure of measurement and memory unit intended for storing information on spatial configuration of the aerial. Output of second computational unit is connected with second input of information collection and control unit and with second input of first computational unit. Output of memory unit is connected with input of second computational unit and with third input of first computational unit. Memory unit is mounted onto tested aerial.
 Stand for measuring parameters of reflector / 2276793
Echo-less chamber, including reflector, receiving technological antenna and system of transmitting cone-shaped irradiators, is provided with system of pulling and adjusting ropes made of resilient radio-transparent material. On aforementioned ropes, receiving technological antenna is held with possible movement by adjusting length of ropes, optical axis of antenna is directed perpendicularly to phase front of electromagnetic wave reflected by reflector. System of transmitting cone-shaped irradiators is connected to adjusting rope and held on a console, which is made of durable rigid radio-transparent material and held on the wall of echo-less chamber.
 Radar measurement compensation-type installation with continuous radiation / 2278391
Installation can be used for measurement of radar characteristics (amplitude and phase diagrams) off dissipation for objects with different shapes. Radar compensation-type measurement installation with continuous radiation has diffuser, bed of diffuser, rotary unit, angle meter, reference signal generator, first attenuator, oriented de-coupler, matching transformer, second attenuator, double wave-guide T-bridge, load, transmitting aerial and receiving aerial. Unit for measuring difference in phases and level relation is introduced into installation additionally as well as control and processing unit, rotary unit control device and amplifier. Time of measurement is reduced due to complete automation of measurement of reverse dissipation process of real objects is provided.
 Method of measurement of antenna directivity diagram / 2279100
Method can be used for inspection of directivity diagrams of antenna systems of different radio systems. Method is based upon measurement of signal amplitude of point radio signal source, disposed in far area of antenna, and angular coordinates of the source. Several navigation satellites of global positioning systems GPS are used. Data on amplitude of radio signals of navigation satellites, their angular coordinates and preudorange to navigation satellite are presented in Internet in form of files in RINEX formats. Rows of values of radio signal amplitudes are formed by means of processing of RINEX files for any navigation satellite depending on its angular coordinates. Rows are selected of set of rows achieved for angles of location of navigation satellite being bigger than 10° which are controlled for factors being proportional to pseudorange till getting corresponding to navigation satellites. Rows of controlled values of amplitude for all the navigation satellites are coherently supposed to adding and averaging.
Method of adjustment of optical axis of viewfinder and electrical axis of aerial / 2252427
Viewfinder is disposed at specific distance from mechanical axis of aerial. Viewfinder is tightly connected with antenna aperture plane. Optical axis of viewfinder is directed in parallel to mechanical axis of aerial. Then electrical axis of aerial is guided to phase center of ancillary aerial which is disposed together with geodetic mark onto post. Optical axis of viewfinder is guided onto geodetic mark. Geodetic mark is tied to angular position detectors and stays apart from phase center of ancillary aerial for distance being equal to shift of viewfinder from mechanical axis of aerial to the plane of normal optical axis of viewfinder. Optical axis of viewfinder is guided onto center of aperture of ancillary aerial. Difference in coordinates is determined by angle of location of initial and final position of viewfinder optical axis. Sword is turned around axis being perpendicular to plane of sword and crossing center of ancillary aerial aperture by angle determined by the relation given in the description of the invention. Electrical axis of aerial is guided onto phase center of ancillary aerial and optical axis of viewfinder is guided onto geodetic mark.
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FIELD: adjustment of electrical axis of antenna. SUBSTANCE: method includes using auxiliary antenna and geodesic mark, linked with indicators of angular position of target antenna, viewfinder is positioned near opening of subject antenna, rigidly linked to opening plane of subject antenna. Flat metallic screen is inserted, to which emission from auxiliary antenna is directed, auxiliary antenna and geodesic mark as light source are positioned behind subject antenna at remote zone distance. Electric axis of subject antenna is directed using its rotation gear according to one of minimum methods to phase center of auxiliary antenna, screen is mounted so, that beams, falling o it from auxiliary antenna and geodesic mark, were reflected respectively to whole plane of opening of target antenna and inlet eye of viewfinder. Angular deflection of optical axis of viewfinder from direction to center of image of geodesic mark on screen determines adjustment of target antenna. EFFECT: higher precision. 2 dwg
Now the present invention relates to the field of radar and can be used when aligning the antenna of the radar stations. Under the alignment of the antenna means to identify the correspondence between the direction of the electrical axis and the testimony of the coordinate system of the antenna. For axisymmetric mirror antenna alignment checks for the axis deviation of the antenna from the optical axis of the reticle installed parallel to the geometric axis of the antenna. Well-known traditional and most common way of adjusting the antenna on the tower [1]. Ushiroyama and auxiliary antennas are located at some distance from each other at altitudes that provide direct visibility and the absence of close lines of communication interfering object. To reduce the influence of reflected radio signals from earth auxiliary, or ushiroyama, or both antennas located on towers. For this reason, this method of measuring parameters of the antenna to the radiation of the auxiliary antenna in the far zone is conventionally referred to as method a tower. The essence of the way the antenna alignment method towers is as follows: near the aperture of the antenna 1 at a certain distance from the axis of the antenna set and rigidly connected with the plane of the aperture of the reticle 2 with coordinates a and b along the axes X and Y (see figure 1). On the tower 5, located the and a certain distance from the antenna 1 is installed, the shield 4, on which place geodetic mark 3 and the auxiliary antenna 6 as a radiator. Geodetic mark 3 is removed from the phase center auxiliary antenna 6 at distances a and b along the axes X and Y, is equal to the displacement of the reticle 2 from the axis of the antenna 1 in the plane normal to the line of sight. For geodetic Marche 3 tie the sensors of the angular position of the antenna. The electrical axis of the antenna 1 using the minimum directed to the phase center of the radiator 6. On the angular deviation of the optical axis of the reticle 2 on the direction of geodetic center of the brand determines the amount of resustance antenna. This method of alignment has a significant drawback. Due to the complexity of using high towers align the antennas, as a rule, carried out at low elevation angles. This leads to alignment errors due to reflections from the ground and local items. The influence of wind and thermal deformations create angular displacement of the tower and installed on its emitter, which also affects the accuracy of the alignment. The task of the invention is to improve the accuracy of alignment of the antenna of the radar. The solution of this problem is achieved in that in the method of adjusting the antenna of the radar using the auxiliary antenna and geodetic marks, tied to the sensors put what I esteruelas antenna, consisting in placing near the aperture esteruelas antenna Vizir, rigidly connected to the plane of the aperture esteruelas antenna, put a flat metal screen on which direct radiation from the auxiliary antenna, the auxiliary antenna and geodetic mark in the form of a light source, come back esteruelas antenna in the far distance zone, induce electric axis esteruelas antenna with its rotary device according to one of the methods of minimum phase center auxiliary antenna, the plane of the screen set so that the rays falling on it from the auxiliary antenna and geodetic marks, reflected, respectively, on the entire plane of aperture antennas and esteruelas entrance pupil of the reticle, while the angular deviation of the optical axis of the reticle from the direction to the center of the image geodezicheskoy marks on the screen to define the alignment is poor esteruelas antenna. The proposed method is illustrated by a drawing presented in figure 2, where 1 - ushiroyama antenna; 2 - Vizir; 3 - geodezichesko mark; 7 - a flat metal screen; 6 - auxiliary antenna. The method of alignment of the antenna of the radar as follows: near the aperture esteruelas antenna 1 (see figure 2) establish and rigidly connected with the plane of the aperture of the reticle 2 with coordinates And the C X and axis Y. Y axis is parallel to the azimuth axis of rotation of the antenna 1, the origin is at the geometric axis of the antenna 1. The optical axis of the reticle 2 is put parallel to the geometric axis of the antenna 1. The rear of the antenna 1 at the distance of the far zone L= 2D2/λ, where D is the aperture diameter of the antenna λ - wavelength feature auxiliary antenna. Near the auxiliary antenna install geodetic mark 3 in the form of a point light source. Geodetic mark 3 is removed from the phase center auxiliary antenna 6 at distances a and b respectively along the axes X' and Y lying in the plane of the aperture of the auxiliary antenna 6. The X' axis is directed horizontally, and the origin of coordinates coincides with the phase center auxiliary antenna 6. Before esteruelas antenna 1 in its searchlight beam mounted on the rack of a dielectric material at a height above the upper edge of the aperture esteruelas antenna 1, a flat metal screen with a mirror surface 7. Screen 7 may be in the form of an ellipse. The minor axis of the ellipse and the projection of the major axis to the plane of the aperture of the antenna 1 is larger than the diameter of the antenna. This should satisfy the condition - minor axis of the ellipse a lot more than the wavelength of the incident on the screen radiation. Auxiliary antenna 6 is directed to the screen 7. The plane of the screen exhibit 7 that is, that the rays falling on it from the auxiliary antenna 6 and geodetic marks 3, reflected respectively on the entire plane of the aperture esteruelas antenna 1 and the entrance pupil of the reticle 2. Given that the size of the screen much more than the wavelength of incident radiation, when considering the reflection from the screen, you can use the laws of geometrical optics. When geometro-optical interpretation of the re-emission field strength close to the screen before and after the reflection of the same. This allows to assume that before and after the re-emission energy propagates in the same direction [3]. The rays emerging from the aperture of the auxiliary antenna 6, near the screen parallel to each other. Getting on the screen, they are reflected on the plane of the aperture of the antenna 1. Optical rays from geodetic marks 3 also get to the screen 7, are reflected from it and get on the entrance pupil of the reticle 2. Using the rotary antenna 1 of its electrical axis of one of the methods of minimum of [2] suggest the phase center of the auxiliary antenna. Radiology reflected from screen 7 will be parallel to an electric axis esteruelas antenna 1. Optical rays from geodetic marks, propagating parallel to radiolucent, will pass through the center of the crosshairs of the reticle, since the optical axis of the camera is parallel to the geometric axis of the antenna 1. Then determine Aut angular deviation of the optical axis of the reticle 2 from the center of the image geodetic marks 3 on the screen, what is desired alignment is poor. In the process of alignment reflected from the earth's signals do not fall on the plane of the aperture esteruelas antenna, since the auxiliary antenna is located behind esteruelas antenna. The portion of the specularly reflected from the earth's signals, which hits the screen, Bouncing off him, misses on westerway antenna, since the angle of arrival of their smaller angle of arrival of the signal coming directly from the auxiliary antenna. Only part of the diffuse reflected signals incident on the screen will be reflected on the plane of the aperture esteruelas antenna. But because of the low altitudes of the screen, these signals are very weak and practically does not affect the accuracy of the alignment. It should be noted that the height of the rack is considerably less than the height of the tower and, therefore, eliminates the error introduced by the angular displacement of the emitter due to the swing tower. The proposed method is the alignment of the antenna of the radar allows the tower to eliminate the effect of the reflected signals to align and improve the accuracy of alignment Sources of information 1. Zahariev L.N., Lemanski A.A., V.I. Turchin and other Methods of measuring the characteristics of microwave antennas. Edited Namzatovna. - M, Radio and communications, 1985, 114 S. 2. Vasin V.V., Vlasov O.V., Gregorin-Ryabov, V.V. and other Radar devices. - M, sovets the OE radio, 1970, 27 S. 3. Eisenberg GS Antenna ultra-short waves. - M, State idealista literature on communication and radio communication. 1957. 500 S. The method of alignment of the antenna of the radar using the auxiliary antenna and geodetic marks, bound angle position sensors esteruelas antenna, which consists in placing near the aperture esteruelas antenna Vizir, rigidly connected to the plane of the aperture esteruelas antenna, characterized in that it introduced a flat metal screen on which direct radiation from the auxiliary antenna, the auxiliary antenna and geodetic mark in the form of the light source include a rear esteruelas antenna in the far distance zone, induce electric axis esteruelas antenna with its rotary device according to one of the methods of minimum phase center auxiliary antenna, the plane of the screen put so that the rays falling on it from the auxiliary antenna and geodetic marks reflected respectively on the entire plane of the aperture esteruelas antenna and the entrance pupil of the reticle, while the angular deviation of the optical axis of the reticle from the direction to the center of the image geodetic marks on the screen determines the alignment is poor esteruelas antenna.
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