RU2012115494A - METHOD FOR DETERMINING NON-RADIAL PROJECTION OF VECTOR SPEED OBJECTIVES - Google Patents

Abstract

1. The method for determining the non-radial projection of the velocity vector of a moving target, which consists in the fact that the target is simultaneously irradiated with two spatially separated antennas with sounding signals of two different frequencies, the signals reflected by the target are received, the frequency difference of the received signals is determined, and the frequency difference of the received signals determine the non-radial projection of the target velocity vector, characterized in that the target is irradiated with two auxiliary monochromatic signals using two additional antennas Alamy of different frequencies, the signals reflected from the target receive and determine the projection of the target’s speed on the direction of the vector D, determined by the formula, where c is the speed of light; f and f are the frequencies of the first and second probing signals; f and f are the frequencies of the first and second auxiliary signals; F and F are the frequencies of the first and second received signals displaced with respect to f and f; the frequencies of the additional monochromatic signals received are displaced with respect to f and f; and are the unit vectors aimed at the target from the location points corresponding to the first and second transmitting antennas; and - unit vectors directed to the target from the points of location of the corresponding additional transmitting antennas; - unit vector directed to the target from the location of the receiving antenna. 2. The method according to claim 1, characterized in that the frequency difference of the auxiliary monochromatic signals is selected equal to the frequency difference of the probing signals. The method according to claim 1, characterized in that the frequency signals f and f; f and f; F and F; F, and F can be converted to the corresponding differential frequency signal with subsequent measurement�

Claims (3)

1. The method for determining the non-radial projection of the velocity vector of a moving target, which consists in the fact that the target is simultaneously irradiated with two spatially separated antennas with sounding signals of two different frequencies, the signals reflected by the target are received, the frequency difference of the received signals is determined, and the frequency difference of the received signals determine the non-radial projection of the target velocity vector, characterized in that the target is irradiated with two additional monochromatic signals using two additional antennas alami of different frequencies, the signals reflected from the target are also received by the formula $$V_D=c\frac{\left(F_3-F_{\mathrm{four}}\right)-\left(F_{\mathrm{one}}-F_2\right)+\left(f_{\mathrm{one}}-f_2\right)-\left(f_3-f_{\mathrm{four}}\right)}{\left|\left(f_{\mathrm{one}}{r}_{\mathrm{one}}^0-f_2{r}_2^0\right)-\left(f_3{r}_3^0-f_{\mathrm{four}}{r}_{\mathrm{four}}^0\right)+\left[\left(f_{\mathrm{one}}-f_2\right)-\left(f_3-f_{\mathrm{four}}\right)\right]r_{PR}^0\right|}$$

determine the projection of the target’s speed on the direction of the vector D, determined by the formula $$D=\left(f_{\mathrm{one}}{r}_{\mathrm{one}}^0-f_2{r}_2^0\right)-\left(f_3{r}_3^0-f_{\mathrm{four}}{r}_{\mathrm{four}}^0\right)+\left[\left(f_{\mathrm{one}}-f_2\right)-\left(f_3-f_{\mathrm{four}}\right)\right]r_{PR}^0$$

, where c is the speed of light; f ₁ and f ₂ are the frequencies of the first and second sounding signals; f ₃ and f ₄ are the frequencies of the first and second auxiliary signals; F ₁ and F ₂ - offset relative to f ₁ and f ₂ frequencies of the first and second received signals; F ₃ and F ₄ are the frequencies of the received additional monochromatic signals offset relative to f ₃ and f ₄ ; $$r_{\mathrm{one}}^0$$

and $$r_2^0$$

- unit vectors directed to the target from the points of location of the first and second transmitting antennas, respectively; $$r_3^0$$

and $$r_{\mathrm{four}}^0$$

- unit vectors aimed at the target from the locations of the respective additional transmitting antennas; $$r_{PR}^0$$

- a unit vector aimed at the target from the location of the receiving antenna. 2. The method according to claim 1, characterized in that the frequency difference of the auxiliary monochromatic signals is selected equal to the frequency difference of the probing signals. 3. The method according to claim 1, characterized in that the signals of frequencies f ₁ and f ₂ ; f ₃ and f ₄ ; F ₁ and F ₂ ; F ₃ , and F ₄ can be converted to the corresponding differential frequency signal with subsequent measurement of this frequency.