RU2500000C2 - Apparatus for identifying firing systems - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: result is achieved by introducing features which enable to determine the value of overload acting on a target as it moves on a trajectory. Such features are the following parameters: elevation speed of the target at the middle point of the observation area, smoothed values of the current coordinate (height) of the target on the trajectory, the number of coordinates measured over the time of monitoring the target, discrete recording of the measured coordinates.

EFFECT: high reliability of identifying presence of a target manoeuvre and parameters thereof when the target moves on a trajectory for active-reactive arming systems, high accuracy of determining coordinates of the origin of trajectory of the target.

2 dwg

Description

The invention relates to the field of radar technical means of recognizing the class of firing artillery systems of the enemy by measuring the current coordinates of the projectile (mines, missiles) on the trajectory.

The alleged invention is an improvement of the known device described in the technical solution according to the patent of the Russian Federation No. 2295739 [1], which is implemented in the product 1L260 and which is an improvement of the known device described in the technical solution according to the patent of the Russian Federation No. 2231084 [2], which is implemented in the products 1L219i 1L219M.

According to the inventions according to RF patents No. 2231084 and No. 2295739, while tracking the projectile on the trajectory at given times, it measures its current coordinates, which are then smoothed, resulting in coordinate estimates: the horizontal components of speed and acceleration at any point in the tracking interval, and fixed the fact of increasing (decreasing) the Doppler frequency of the signal. After that, the horizontal components of the velocity Vcp and acceleration Wcp are calculated for the middle of the observation interval. Next, by floor To scientific estimates of the horizontal components of speed and acceleration for the middle of the observation interval, the value of the ballistic function E and the value of the ballistic coefficient C are determined, as well as their ratios E / Vcp and Wcp / V, the character of the path section — active or passive — is determined by the sign of the ballistic function. active site according to a preselected threshold of ballistic function, the target is assigned to classes 5 or 6: class 5 - tactical missiles (active site), class 6 - active-reactive missiles orders, active-reactive mines (ARS, AWP). For a passive section of the trajectory, the values of horizontal velocities and accelerations are used to determine the conditional probability densities of the observed ballistic target in each of four classes:

Grade 1 - howitzers;

Grade 2 - mortars;

Grade 3 - MLRS;

Grade 4 - tactical missiles (passive section).

The assignment of an object to one or another class is carried out according to the maximum of the conditional probability density of belonging of the observed ballistic target to one of the four classes.

If preliminary recognition by the value of the ballistic function and by the maximum of the conditional probability density of the target's belonging to one of the four classes showed that the target belongs to the 2nd, 4th, 5th or 6th grade, additional recognition is not performed. If preliminary recognition showed that the target belongs to the first (artillery) or third (MLRS) classes, an additional refinement of the target's belonging to the first or third classes is made according to the nature of the change in the Doppler frequency of the signal. With an increase in the Doppler frequency (an increase in velocity), the target belongs to the third class. In the case of decreasing values of the Doppler frequency - the target is on the passive section of the trajectory - an additional analysis of the values of E and Wcp is performed: Wcp> 50 and E> 0.075,

(1) Wcp <30 and E <0.03 and E / Vcp <0.3 and Wcp / Vcp <0.03. (2)

When inequalities (1) or (2) are fulfilled, the goal unambiguously belongs to class 3 and the recognition process stops at that. If at least one of the inequalities (1) or (2) is not satisfied, the identification of targets continues according to conditional indicators of the probability that the target belongs to the corresponding i-th class - 1 or 3 - P _{i, j} (i = l, 3) no j parameters recognition - j = 0,1,2,3.

The recognition parameters E, Wcp / Vcp, E / Vcp, and C are used as the parameters by which P _{i, j} is calculated.

Immediately before determining the conditional indicators of the probability that the target belongs to the corresponding class, their values are reset:

P _{i, j} = 0, i = l, 3, j = 0,1,2,3. (3)

The values of P _{i, j are} determined by the following expressions:

$${\text{P}}_{\text{one}\text{0}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.02}\le \text{E}\le \text{0}\text{.022 or 0}\text{.033}\le \text{E}\le \text{0}\text{.035 or}\\ \text{0}\text{.046}\le \text{E}\le \text{0}\text{.053 or 0}\text{.077}\le \text{E}\le \text{0}\text{.08;}\end{array}\\ \begin{array}{l}\text{2}\text{if 0}\text{.022}<\text{E}<\text{0}\text{.033 or 0}\text{.035}<\text{E}<\text{0}\text{.046 or}\\ \text{0}\text{.053}<\text{E}<\text{0}\text{.077;}\end{array}\end{array}$$

$${\text{<figure-callout id="3" label="P" filenames="00000015.png,00000016.png" state="{{state}}">P</figure-callout>}}_{\text{3}\text{0}}=\{\begin{array}{c}\begin{array}{l}\text{one}\text{if 0}\text{.005}\le \text{E}\le \text{0}\text{.01 or 0}\text{.017}\le \text{E}\le \text{0}\text{.032 or}\\ \text{0}\text{.038}\le \text{E}\le \text{0}\text{.077 or 0}\text{.085}\le \text{E}\le \text{0}\text{.one;}\left(\text{four}\right)\end{array}\\ \begin{array}{l}\text{2}\text{if 0}\text{.01}<\text{E}<\text{0}\text{.017 or 0}\text{.032}<\text{E}<\text{0}\text{.038 or}\\ \text{0}\text{.077}<\text{E}<\text{0}\text{.085;}\end{array}\end{array}$$

$${\text{P}}_{\text{one}\text{,one}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.02}\le \frac{\text{Wcp}}{Vcp}\le 0.035\text{or 0}\text{.041}\le \frac{\text{Wcp}}{\text{Vcp}}\le 0.048\text{or}\\ \text{0}\text{.056}\le \frac{\text{Wcp}}{\text{Vcp}}\le 0.068\text{or 0}\text{.079}\le \frac{\text{Wcp}}{Vcp}\le 0.081;\end{array}\\ \begin{array}{l}2\text{if 0}\text{.035}<\frac{\text{Wcp}}{Vcp}<0.041\text{or 0}\text{.048}<\frac{\text{Wcp}}{\text{Vcp}}<0.056\text{or}\\ \text{0}\text{.068}<\frac{\text{Wcp}}{\text{Vcp}}<0.079;\end{array}\end{array}$$

$${\text{<figure-callout id="3" label="P" filenames="00000015.png,00000016.png" state="{{state}}">P</figure-callout>}}_{\text{3}\text{,one}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.16}\le \frac{\text{Wcp}}{Vcp}\le 0.018\text{or 0}\text{.024}\le \frac{\text{Wcp}}{\text{Vcp}}\le 0.035\text{or}\\ \text{0}\text{.045}\le \frac{\text{Wcp}}{\text{Vcp}}\le 0.056\text{or 0}\text{.067}\le \frac{\text{Wcp}}{Vcp}\le 0.08\text{or}\\ \text{0}\text{.068}\le \frac{\text{Wcp}}{Vcp}\le 0.079;\end{array}\\ \begin{array}{l}2\text{if 0}\text{.018}<\frac{\text{Wcp}}{Vcp}<0.024\text{or 0}\text{.035}<\frac{\text{Wcp}}{\text{Vcp}}<0.045\text{or}\\ \text{0}\text{.056}<\frac{\text{Wcp}}{\text{Vcp}}<0.067\\ \text{or 0}\text{.056}<\frac{\text{Wcp}}{Vcp}<0.06;\left(5\right)\end{array}\end{array}$$

$${\text{P}}_{\text{one}\text{, 2}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.3}\le \frac{\text{E}}{Vcp}\le 0.35\text{or 0}\text{.5}\le \frac{\text{E}}{\text{Vcp}}\le 0.65\text{or}\\ \text{0}\text{.81}\le \frac{\text{E}}{\text{Vcp}}\le 1.2;\end{array}\\ \begin{array}{l}2\text{if 0}\text{.3}<\frac{\text{E}}{Vcp}\le 0.5\text{or 0}\text{.65}<\frac{\text{E}}{\text{Vcp}}<0.81\text{or}\\ \text{one}\text{.2}<\frac{\text{E}}{\text{Vcp}}\le 1.4;\end{array}\end{array}$$

$${\text{<figure-callout id="3" label="P" filenames="00000015.png,00000016.png" state="{{state}}"><figure-callout id="2" label="P" filenames="00000015.png,00000016.png" state="{{state}}">P</figure-callout></figure-callout>}}_{\text{3}\text{, 2}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.one}\le \frac{\text{E}}{Vcp}\le 0.12\text{or 0}\text{.19}\le \frac{\text{E}}{\text{Vcp}}\le 0.38\text{or}\\ \text{0}\text{.43}\le \frac{\text{E}}{\text{Vcp}}\le 0.81\\ \text{or 1}\text{.one}\le \frac{\text{E}}{\text{Vcp}}\le 1.3\text{or 1}\text{.7}\le \frac{\text{E}}{\text{Vcp}}\le 3;\end{array}\\ \begin{array}{l}2\text{if 0}\text{.12}<\frac{\text{E}}{Vcp}<0.19\text{or 0}\text{.38}<\frac{\text{E}}{\text{Vcp}}<0.43\text{or}\\ \text{0}\text{.81}<\frac{\text{E}}{\text{Vcp}}<1.1\\ \text{or 1}\text{.3}<\frac{\text{E}}{\text{Vcp}}<1.7;\left(6\right)\end{array}\end{array}$$

$${\text{P}}_{\text{one}\text{, 3}}=\{\begin{array}{c}\mathrm{one,}\text{if 0}\text{.eighteen}\le \text{C}\le \text{0}\text{.19 or 0}\text{.four}\le \text{C}\le \text{0}\text{.5 or 0}\text{.61}\le \text{C}\le \text{0}\text{.69;}\\ \text{2}\text{if 0}\text{.19}<\text{C}<\text{0}\text{.04 or 0}\text{.5}<\text{C}<\text{0}\text{.61;}\end{array}$$

$$$$

$${\text{P}}_{\text{3}\text{, 3}}=\{\begin{array}{c}\begin{array}{l}\mathrm{one,}\text{if 0}\text{.05}\le \text{C}\le \text{0}\text{.08 or 0}\text{.13}\le \text{C}\le \text{0}\text{.22 or 0}\text{.35}\le \text{C}\le \text{0}\text{.38}\\ \text{or 0}\text{.51}\le \text{C}\le \text{0}\text{.61 or 0}\text{.75}\le \text{C}\le \text{0}\text{.8;}\left(\text{7}\right)\end{array}\\ \begin{array}{l}2\text{if 0}\text{.08}<\text{C}<\text{0}\text{.13 or 0}\text{.22}<\text{C}<\text{0}\text{.35 or 0}\text{.38}\le \text{C}\le \text{0}\text{.51}\\ \text{or 0}\text{.61}\le \text{C}\le \text{0}\text{.75;}\end{array}\end{array}$$

The resulting conditional probabilities are summarized.

$${\text{Ps}}_{\text{i}}={\displaystyle \sum _{\text{j}=\text{0}}^{\text{3}}{\text{P}}_{\text{i}\text{, j}}\text{,}}\text{i}=\text{one}\text{, 3}\text{.}\left(\text{8}\right)$$

Assignment to the 1st or 3rd class is carried out according to the maximum value of the probabilities P _S :

$$\text{Class}=\{\begin{array}{c}\text{one}{\text{, Ps}}_{\text{one}}\ge {\text{<figure-callout id="3" label="Ps" filenames="00000015.png,00000016.png" state="{{state}}"><figure-callout id="3" label="Ps" filenames="00000015.png,00000016.png" state="{{state}}">Ps</figure-callout></figure-callout>}}_{\text{3}}\text{,}\\ \text{3}{\text{, Ps}}_{\text{one}}<{\text{<figure-callout id="3" label="Ps" filenames="00000015.png,00000016.png" state="{{state}}">Ps</figure-callout>}}_{\text{3}}\text{.}\end{array}\left(9\right)$$

This device, shown in figure 1, includes the following blocks:

1 - block smoothing the obtained rectangular coordinates of the projectile flight path;

2 - block conversion of smooth coordinates;

3 - the first threshold device;

4 - memory block of conditional probability densities of the target belonging to each of the four classes;

5 - a unit for determining the maximum of the conditional probability density of a target belonging to one of four classes;

6 - second threshold device;

7 - storage device (memory);

8 is a comparison device;

9 is a block analysis of increasing values of the Doppler frequency;

10 - unit for calculating additional recognition parameters;

11 - the first block of the analysis of the parameters of the trajectory;

12 - second block analysis of the parameters of the trajectory;

13 - block zeroing conditional probability indicators;

14 - the first block of obtaining conditional probability indicators;

15 - the second block of obtaining conditional probability indicators;

16 - the third block of obtaining conditional probability indicators;

17 - the fourth block of obtaining conditional probability indicators;

18 is a block summing conditional probability indicators;

19 is a block comparing the sums of conditional probability indicators.

The device adopted for the prototype works as follows.

In the process of auto tracking, the values of the current rectangular coordinates of the projectile flight path and the Doppler frequency of the signal are fed to the input of block 7, where the values of the Doppler frequency of the signal are stored and transmitted from the first output to the second input of the analysis unit of increasing values of the Doppler frequency 9, and the rectangular coordinates of the projectile flight path from the second the output of block 7 is transmitted to the input of block 1. Next, in block 1, the rectangular coordinates of the projectile’s flight path are smoothed, resulting in smoothed s assessment of rectangular coordinates, velocity and acceleration of the projectile at the end of the observation interval. In the unit for converting the smoothed coordinates 2, the rectangular coordinates of the projectile’s flight path, velocities and accelerations of the projectile are recounted in the middle of the observation interval, the horizontal components of the velocities and accelerations in the middle of the observation interval are calculated, and the ballistic function E is calculated. After that, the sign is analyzed in the first threshold device 3 ballistic function E.

If E≥0 control is transferred to block 4, where the constants are stored, the values of which are equal to the conditional probability densities of the obtained values of the horizontal components of speed and acceleration to each of the four classes (1, 2, 3, or 4). In block 5, the membership of the target in the corresponding class is determined by the maximum conditional probability density of the probability that the target belongs to one of the four classes, after which control is transferred to the comparison device 8.

If E <0, control is transferred to the second threshold device 6, where, in accordance with a preselected threshold of the ballistic function, the target is assigned to class 5 or 6, after which control is transferred to the comparison device 8.

The comparison device 8 analyzes the belonging of the target to 1 or 3 classes. If the target belongs to the 2nd, 4th, 5th or 6th classes, recognition of the target's class is considered completed. If the target belongs to class 1 or 3, control is transferred to the first input of block 9, where the presence of increasing Doppler frequency values received at the second input of block 9 from the first output of memory device 7 is analyzed. If the Doppler frequency increases, the target belongs to class 3 and recognition of the target class is considered complete; otherwise, control is transferred to block 10 for calculating additional recognition parameters (Wcp / Vcp, E / Vcp and С), and then to the first block for analyzing the parameters of the path 11, where Xia analysis of inequalities (1).

If both inequalities (1) are satisfied, the goal belongs to class 3 and recognition of the target class is considered fulfilled.

If at least one of the inequalities (1) is not satisfied, the control from the output 1 of the first block of the analysis of the parameters of the path 11 is transferred to the second block of the analysis of the parameters of the path 12, where the analysis is carried out by inequalities (2).

If all inequalities (2) are fulfilled, the goal belongs to class 3 and recognition of the target class is considered fulfilled.

If at least one of the inequalities (2) is not satisfied, the control from the output 1 of the second block of analysis of the parameters of the trajectory 12 is transmitted sequentially:

- to block 13, where the conditional indicators of the probability of belonging of the target to classes 1 and 3 are zeroed according to

- on the first block of obtaining conditional probability indicators 14, where the values of P _1,0 , P _{3,0 are} determined according to (4) as a result of the analysis of the value of E;

- to the second block for obtaining conditional probability indicators 15, where the values of P _1,1 , P _{3,1 are} determined according to (5) as a result of the analysis of the value of Wcp / Vcp;

- to the third block for obtaining conditional probability indicators 16, where the values of P _1,2 , P _{3,2 are} determined according to (6) as a result of the analysis of the value of E / Vcp;

- on the fourth block of obtaining conditional probability indicators 17, where the values of P _1,3 , P _3,3 are determined

- according to (7) as a result of the analysis of the value of C;

- to the unit for summing conditional probability indicators 18, where the values Ps ₁ , Ps ₂ are calculated for classes 1 and 3, respectively, according to (8);

- to the unit for comparing the sums of conditional probability indicators 19, where the target is assigned to the corresponding class according to (9).

Thus, in blocks: a comparison device (8) ,. analysis unit for increasing the Doppler frequency (9), the first unit for analyzing the parameters of the path (11), the second unit for analyzing the parameters of the path (12) and the unit for comparing the sums of conditional probability indicators (19), which are combined by their second outputs in the prototype, the fact that the firing system belongs to one or another class.

However, systems (targets) related to Grades 3, 5, and 6 (Grade 3 - MLRS, Grade 5 - tactical missiles (active section), Grade 6 - active rockets, active rockets (ARS, AWP)) in the active section trajectories can make a maneuver - change the direction of their movement on the trajectory. The presence of a maneuver can significantly distort the estimated parameters, which are subsequently used for recognition. Therefore, it is important not only to establish the fact of the presence of a maneuver of the target, but also to determine its parameters, in particular the magnitude of the overload. In the prototype, the presence of maneuver and the magnitude of the overload are not determined, which, accordingly, reduces the likelihood of recognizing the class of firing systems during reconnaissance of targets moving at the initial stage according to non-ballistic principles.

The disadvantages of the prototype are the above facts, leading to a decrease in the probability of recognition of firing systems and, as a result, to a decrease in the accuracy of determining the coordinates of the firing positions of reconnaissance firing systems.

The aim of the present invention and the technical result is the recognition of the presence of the maneuver of the target and its parameters when the target moves along the trajectory for systems belonging to 3, 5 or 6 classes.

This goal is achieved by the fact that as additional signs of recognition are considered:

- the number of measured coordinates during the observation of the target - N;

- N smoothed values of the coordinate H (the current coordinate of the height of the target on the trajectory) - H _i (i = 0 ... N-1);

- target speed along the H coordinate at the midpoint of the observation site - Vн _cp ;

- discrete measurement of measured coordinates - dt.

If recognition has shown that the target belongs to the 3rd, 4th, 5th or 6th grade, an analysis is made for the presence of maneuver and the magnitude of the overload is determined. To do this, the following operations are performed.

According to the smoothed coordinates H; and the calculated speed parameter along the H coordinate at the midpoint of the observation site — Vн _cp — the overloads in the first (Per1), second (Per2) halves of the observation interval and the entire observation interval (Per) are calculated:

$$\text{Per1}=\frac{\left|\left(\frac{\left|{\text{H}}_{\text{0}}-{\text{H}}_{\text{one}}\right|}{\text{dt}}+\frac{\left|{\text{H}}_{\text{one}}-{\text{<figure-callout id="2" label="H" filenames="00000015.png,00000016.png" state="{{state}}">H</figure-callout>}}_{\text{2}}\right|}{\text{dt}}\right)\cdot \text{0}\text{,5}-{\text{Vн}}_{\text{cp}}\right|}{\text{dt}\cdot \frac{\left(\text{N}-\text{one}\right)}{\text{2}}}$$

$$\text{Per2}=\frac{\left|\left(\frac{\left|{\text{H}}_{\text{N-1}}-{\text{H}}_{\text{N-2}}\right|}{\text{dt}}+\frac{\left|{\text{H}}_{\text{N-2}}-{\text{H}}_{\text{N-3}}\right|}{\text{dt}}\right)\cdot \text{0}\text{,5}-{\text{Vн}}_{\text{cp}}\right|}{\text{dt}\cdot \frac{\left(\text{N}-\text{one}\right)}{\text{2}}}\left(10\right)$$

$$Per=\frac{\left(Per\mathrm{one}+Per2)\cdot 0.5\right)}{9.81}$$

The resulting Per overload value is compared with the specified Per_por threshold.

When Per <Per_por, the value of the overload value is assumed to be 1 (no maneuver). When Per> Per_por - there is a maneuver, the value of the overload value is taken equal to the received value of Per.

Figure 2 shows a diagram of the proposed device, allowing to recognize the presence of maneuver of reconnaissance targets and determine the magnitude that arises from this overload.

The device includes the following blocks:

1 - block smoothing the obtained rectangular coordinates of the projectile flight path;

2 - block conversion of smooth coordinates;

3 - the first threshold device;

4 - memory block of conditional probability densities of the target belonging to each of the four classes;

5 - a unit for determining the maximum of the conditional probability density of a target belonging to one of four classes;

6 - second threshold device;

7 - storage device (memory);

8 is a comparison device;

9 is a block analysis of increasing values of the Doppler frequency;

10 - unit for calculating additional recognition parameters;

11 - the first block of the analysis of the parameters of the trajectory;

12 - second block analysis of the parameters of the trajectory;

13 - block zeroing conditional probability indicators;

14 - the first block of obtaining conditional probability indicators;

15 - the second block of obtaining conditional probability indicators;

16 - the third block of obtaining conditional probability indicators;

17 - the fourth block of obtaining conditional probability indicators;

18 is a block summing conditional probability indicators;

19 is a block comparing the sums of conditional probability indicators.

20 - block analysis of the target class;

21 is a first block for calculating overload;

22 is a second block for calculating overload;

23 is a third block for calculating overload;

24 - block comparison overload.

The inventive device operates as follows.

During auto tracking, the values of the current rectangular coordinates of the projectile flight path and the Doppler frequency of the signal are fed to the input of block 7, where the values of the Doppler frequency of the signal are stored and transmitted from the first output to the second input of the analysis unit of increasing values of the Doppler frequency 9, and the rectangular coordinates of the projectile flight path from the second the output of block 7 is transmitted to the input of block 1. Next, in block 1, the rectangular coordinates of the projectile’s flight path are smoothed, resulting in smoothed s assessment of rectangular coordinates, velocity and acceleration of the projectile at the end of the observation interval. In the unit for converting the smoothed coordinates 2, the rectangular coordinates of the projectile’s flight path, velocities and accelerations of the projectile are converted to the middle of the observation interval, the horizontal components of the velocities and accelerations are calculated in the middle of the observation interval, as well as the calculation of the ballistic function E. Smoothed coordinates (H), target speed according to the H coordinate at the midpoint of the observation site - (Vн cp), the number of measured coordinates during the observation of the target (N) and the discrete measurement of the measured coordinates (dt) from the second exit from unit 2 are fed to the second inputs of the units for calculating the overloads 21 and 22. And the values of the velocities and accelerations of the projectile in the middle of the observation interval, the horizontal components of the velocities and accelerations in the middle of the observation interval, as well as the ballistic function E are transmitted to the input of the first threshold device 3, where the sign is analyzed ballistic function E.

If E≥0 control is transferred to block 4, where the constants are stored, the values of which are equal to the conditional probability densities of the obtained values of the horizontal components of speed and acceleration to each of the four classes (1, 2, 3, or 4). In block 5, the membership of the target in the corresponding class is determined by the maximum conditional probability density of the probability that the target belongs to one of the four classes, after which control is transferred to the comparison device 8.

If E <0, control is transferred to the second threshold device 6, where, in accordance with a preselected threshold of the ballistic function, the target is assigned to class 5 or 6, after which control is transferred to the comparison device 8.

The comparison device 8 analyzes the belonging of the target to 1 or 3 classes. If the target belongs to classes 2, 4, 5, or 6, recognition of the target class is considered fulfilled and the obtained values of the target class are transmitted to the input of the class analysis block. If the target belongs to class 1 or 3, control is transferred to the first input of block 9, where the presence of increasing Doppler frequency values received at the second input of block 9 from the first output of memory device 7 is analyzed. If the Doppler frequency increases, the target belongs to class 3 and recognition of the target class is considered complete; otherwise, control is transferred to block 10 for calculating additional recognition parameters (Wcp / Vcp, E / Vcp and С), and then to the first block for analyzing the parameters of the path 11, where Xia analysis of inequalities (1).

If both inequalities (1) are satisfied, the goal belongs to class 3 and recognition of the target class is considered fulfilled.

If at least one of the inequalities (1) is not satisfied, the control from the output 1 of the first block of the analysis of the parameters of the trajectory 11 is transferred to the second block of the analysis of the parameters of the trajectory 12, where the analysis is performed according to inequalities (2).

If all inequalities (2) are fulfilled, the goal belongs to class 3 and recognition of the target class is considered fulfilled.

If at least one of the inequalities (2) is not satisfied, the control from the output 1 of the second block of analysis of the parameters of the trajectory 12 is transmitted sequentially:

- to block 13, where the conditional indicators of the probability that the target belongs to classes 1 and 3 are zeroed according to (3);

- on the first block of obtaining conditional probability indicators 14, where the values of P _1,0 , P _{3,0 are} determined according to (4) as a result of the analysis of the value of E;

- to the second block for obtaining conditional probability indicators 15, where the values of P _1,1 , P _{3,1 are} determined according to (5) as a result of the analysis of the value of Wcp / Vcp;

- to the third block for obtaining conditional probability indicators 16, where the values of P _1,2 , P _{3,2 are} determined according to (6) as a result of the analysis of the value of E / Vcp;

- to the fourth block for obtaining conditional probability indicators 17, where the values of P _1.3 , P _{3.3 are} determined according to (7) as a result of analysis of the value of C;

- to the unit for summing conditional probability indicators 18, where the values Ps ₁ , Ps ₂ are calculated for classes 1 and 3, respectively, according to (8);

- to the unit for comparing the sums of conditional probability indicators 19, where the target is assigned to the corresponding class according to (9).

The value of the target class obtained in blocks 8 or 19 is transmitted to the analysis block of the target class 20 where it is analyzed. If the target belongs to classes 1 or 2, there is no maneuver, the value of the overload is assumed to be 1, and control from output 2 of unit 20 is transferred to the output of the device, further operation of the device ceases to belong to classes 3, 4, 5, or 6, control is transferred sequentially through the first the output of the analysis block of the target class 20 to the first inputs of the first and second blocks of calculating the overload (blocks 21, 22) (their second inputs are connected to the output of the block for converting the smoothed coordinates), to the third block of calculating the overload 23 and to the comparison block overloads 24, the output of which together with the second output of the analysis unit of the target class is the output of the device.

The use of the inventive device, as shown by the calculations performed on the model, and according to the authors' records of real trajectory measurements of the projectile flight, makes it possible to efficiently recognize a maneuvering target and calculate the magnitude of the overload affecting the maneuvering target, which, in turn, allows to reduce determination errors coordinates of the firing positions of firing systems during extrapolation of the trajectory to the point of departure (start).

BIBLIOGRAPHY

1. RF patent No. 2231084, G01S 13/06, 13/56, published June 20, 2004, bull. Number 17.

2. RF patent No. 2295739, G01S 13/06, 13/56.

Claims (1)

A recognition system for shooting systems containing a sequentially connected storage device, a block for smoothing the obtained rectangular coordinates of the projectile flight path, a block for converting smoothed coordinates, a first threshold device, a memory block of conditional probability densities of the target belonging to each of the four classes, a unit for determining the maximum of the conditional probability density of the target belonging to one of four classes, a comparison device and an analysis unit for increasing Doppler hour values the cells, as well as the second threshold device, the input of which is connected to the second output of the first threshold device, and the first and second outputs of the second threshold device and the output of the unit for determining the maximum conditional probability density of the target belonging to one of four classes are combined with each other and with the input of the comparison device, the first output of the storage device is connected to the second input of the analysis unit of the increase in the values of the Doppler frequency, as well as series-connected unit for calculating additional x recognition parameters, the first block of analysis of the parameters of the path, the second block of analysis of the parameters of the path, the block zeroing of conditional probability indicators, the first block of obtaining conditional probability indicators, the second block of obtaining conditional probability indicators, the third block of obtaining conditional probability indicators, the fourth block of obtaining conditional probability indicators, a unit for summing conditional probability indicators, a unit for comparing sums of conditional probability indicators, wherein the first output of the analysis unit in the increasing values of the Doppler frequency is connected to the input of the block for calculating additional recognition parameters, and the second output of the comparison device is combined with the second outputs of the analysis unit for increasing the values of the Doppler frequency, the first and second blocks for analyzing the path parameters, characterized in that the class analysis unit is additionally introduced in series goals, the first congestion calculation unit, the second congestion calculation unit, the third congestion calculation unit and the congestion comparison unit, pr the first input of the target class analysis unit is connected to the output of the comparison unit for summing conditional probability indicators, and its second input is connected to the second output of the comparison device, the first output of the target class analysis unit is connected to the first input of the first overload calculation unit, the output of which is connected to the first input of the second overload calculation unit, while the second inputs of the first and second overload calculation units are connected to the output of the smoothed coordinate transformation unit, and the output of the second overload calculation unit with connected in series with the third overload calculation unit and the overload comparison unit, the output of the overload comparison unit connected to the second output of the target class analysis unit is the output of the device.

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