RU2012121640A - REQUIRED METHOD FOR MEASURING RADIAL SPEED AND DETERMINING THE LOCATION OF A MOBILE OBJECT AND A SYSTEM FOR ITS IMPLEMENTATION - Google Patents

Abstract

1. A request method for measuring radial velocity and determining the location of a moving object and a system for its implementation, which consists in the use of two objects, each object is equipped with a request unit and a relay, in addition, one or both objects can be mobile, at each object a request signal for frequency ω is phase-manipulated by 180 ° with a pseudo-random sequence of maximum duration, thereby generating a complex signal with phase shift keying, and converting it in frequency using frequency from ω of the first local oscillator, isolate the voltage of the first intermediate frequency ω = ω + ω = ω, amplify it by power, radiate it at the frequency ω = ω, pick it up by the relay of another object, amplify it by power, convert it by frequency using the frequency of the third local oscillator, isolate the voltage of the second intermediate frequency: ω = ω-ω = ω, amplify it in power, radiate it at the frequency ω = ω, catch it by the request unit of another object, amplify it in power, convert it in frequency using the frequency of the second local oscillator, isolate the first e voltage of the third intermediate frequency: ω ± Ω = ω-ω, multiply and divide it in phase by two, isolate harmonic oscillation at a frequency of ω ± Ω and determine the magnitude and direction of the Doppler frequency by the magnitude and direction of the radial velocity, and simultaneously a complex signal with phase shift keying at a frequency ω pass through the first block of adjustable delay, the first voltage of the third intermediate frequency ω ± Ω = ω-ω, differentiate in time, multiply with a complex signal with phase shift keying at a frequency ω passed through the first block of control

Claims (2)

1. A request method for measuring radial velocity and determining the location of a moving object and a system for its implementation, which consists in the use of two objects, each object is equipped with a request unit and a relay, in addition, one or both objects can be mobile, at each object a request signal for frequency ω _{s is} manipulated in phase by 180 ° with a pseudo-random sequence of maximum duration, thereby forming a complex signal with phase manipulation, it is converted in frequency using frequency the frequencies ω _{g1 of the} first local oscillator, isolate the voltage of the first intermediate frequency ω _pr1 = ω _s + ω _g1 = ω ₁ , amplify it by power, radiate it at the frequency ω ₁ = ω _pr1 , pick it up by the relay of another object, amplify it by power, convert it by frequency using frequency ω _z3 third LO isolated voltage of the second intermediate frequency: ω = ω _{np2 pr1} -ω _z3 = ω _2, increase its power emit broadcast at frequency ω ₂ = ω _np2, catch block query another object, reinforce in power, convert in frequency using cha Toty ω _r2 of the second local oscillator is isolated first voltage of the third intermediate frequency: ω _{d PR3} ± Ω = ω _z2 -ω _2, multiply and divide it into two phase, is isolated harmonic oscillation at frequency ω _{d PR3} ± Ω and the magnitude and sign of the doppler frequency determining the magnitude and direction of radial velocity, while the composite signal with a phase shift keying _with a frequency ω is passed through the first variable delay unit, the first voltage of the third intermediate frequency _PR3 ± ω ω _d = ω _z2 -ω ₂ is differentiated with respect to time, multiplied with a complex signal from AZOV manipulation at frequency ω _s, passed through the first block of the variable delay, emit a low-frequency voltage, thereby forming a derivative of the first correlation function dR ₁ (τ) / dτ, where τ - current time delay, the change delay τ support derivative of the first correlation function dR ₁ (τ) / dτ, at zero, the time delay τ is fixed between _P1 and the repeated interrogation signals, corresponding to the zero value of the first derivative of the correlation function, and its value determines the distance between Objects R = sτ _P1 / 2, where c - velocity of propagation, wherein the repeated signal at frequency ω ₂ = ω _PR3, capture unit request for two additional receive antennas, increase of power is converted in frequency by using frequency ω _z2 second local oscillator emit second and third voltage of the third intermediate frequency: ω _{d PR3} ± ω = ω _z2 -ω _2, differentiating them by time, the first voltage of the third intermediate frequency _PR3 ± ω ω _d = ω _z2 -ω _2, and passed through a second third blocks adjustable delay, re multiply it with the second and third voltages of the third intermediate frequency, differentiated in time, allocate low-frequency voltages, thereby forming derivatives of the second and third correlation functions:

and

, by varying the delay τ, the derivatives of the correlation functions are maintained at a zero level, time delays τ _З2 and τ _{З3 are fixed} between the relay signals received by the first and second receiving antennas, the first and third receiving antennas corresponding to the zero value of the derivatives of the second and third correlation functions, and according to their the value is determined by the azimuth and elevation angle of the moving object:

,

, where α and β are the azimuth and elevation angle of the moving object; d ₁ and d ₂ - measuring base, moreover, the first transceiver and receiving antennas are placed in the form of a geometric right angle, at the top of which the first transceiving antenna is placed, common to the receiving antennas located in the azimuthal and elevation planes, respectively. 2. A system for measuring radial velocity and determining the location of a moving object, comprising a request unit located on each object, including a serially connected master oscillator, a phase manipulator, the second input of which is connected to the output of the shift register, the first mixer, the second input of which is connected to the output of the first local oscillator , an amplifier of the first intermediate frequency, a first power amplifier, a first duplexer, the input-output of which is connected to the first transceiver antenna, a second power amplifier, a second mixer, the second input of which is connected to the output of the second local oscillator, a first amplifier of the third intermediate frequency, a phase doubler, a phase divider by two, a first narrow-band filter, a fourth mixer, a second input of which is connected to the output of the master oscillator, a second narrow-band filter and a Doppler frequency meter, the first block of adjustable delay, the first multiplier, the second input of which is connected to the output of the first amplifier through the first differentiator, connected in series to the output of the phase manipulator I have a third intermediate frequency, the first low-pass filter and the first low-frequency amplifier, the output of which is connected to the second input of the first adjustable delay unit, the range indicator is connected to the second output, and a repeater that includes a second duplexer connected in series, the input-output of which is connected to the second transceiver antenna, a third power amplifier, a third mixer, the second input of which is connected to the output of the third local oscillator, a second intermediate frequency amplifier and a fourth amplifier powerfully the output of which is connected to the input of the second duplexer, characterized in that the request unit is equipped with first and second receiving antennas, a fifth and sixth power amplifier, fifth and sixth mixers, second and third amplifiers of the third intermediate frequency, second and third differentiators, second and third multipliers, second and third low-pass filters, second and third low-frequency amplifiers, second and third adjustable delay units, azimuth indicator and elevation indicator, and to the first receiving antenna the fifth power amplifier, the fifth mixer, the second input of which is connected to the output of the second local oscillator, the second amplifier of the third intermediate frequency, the second differentiator, the second multiplier, the second input of which is connected through the second block of the adjustable delay to the output of the first amplifier of the third intermediate frequency, the second filter low frequencies and a second low-frequency amplifier, the output of which is connected to the second input of the second adjustable delay unit, the second output of which is connected In azimuth, the sixth power amplifier, the sixth mixer, the second input of which is connected to the output of the second local oscillator, the third amplifier of the third intermediate frequency, the third differentiator, and the third multiplier, the second input of which is connected to the output of the first amplifier through the third adjustable delay unit, are connected to the second receiving antenna third intermediate frequency, a third low-pass filter and a third low-frequency amplifier, the output of which is connected to the second input of the third adjustable delay unit, to watts rum output of which is connected a pointer elevation angle, the first antenna system, a first and second receiving antennas arranged in a right angle to the geometrical vertex of which is placed the first transceiver antenna common to the first and second receiving antennas disposed in the azimuth and elevation planes respectively.