KR100254013B1 - A system for obtaining the data of fire target of artillery and a method for obtaining and transmitting the data - Google Patents

Abstract

PURPOSE: An artillery shooting target data obtaining system and method thereof and a transmission method of the data are provided to extract perpendicular coordinates for an observation team position or a target position on the basis of a reference line in a short time, thereby increasing the probability of hitting the target from a first shooting. CONSTITUTION: A system for obtaining artillery shooting target data includes an observation team system(P2) having a GPS receiver for receiving output signals of a GPS satellite via the GPS antenna for obtaining longitude and latitude coordinates and WGS-84 perpendicular coordinates, a rangefinder for obtaining a distance between the observation team and a target(P3), a tiltmeter for obtaining tilts of axes X and Y, a magnetometer for obtaining a strength of magnetic fields of axes x, y and z, a computer receiving data obtained by the GPS receiver, the tiltmeter, the magnetometer and the rangefinder for selectively computing a magnetic declination and an inclination according to IGRFCAL program, and a radio service for transmitting the numerated data of the computer to a radio service of an FDC(Fire Direction Center;P1), and an FDC system having a GPS receiver for obtaining geographic coordinates by receiving signals form the GPS satellite via a GPS antenna, the radio service for receiving the numerated data from the observation team system, and a computer for computing a vector to the target on the basis of the geographical coordinates and the numerated data.

Description

Artillery shooting target acquisition system and its acquisition method and delivery method

In the present invention, the artillery observing team sets a shooting target, measures the specifications of the target, and then transmits the measured data to the turret headquarters to fire the shot coal. An artillery shooting target acquisition system that can improve the performance of the system for delivering amendment specifications to the turret headquarters for launching the target, and the method for obtaining and obtaining the specifications.

Here, the conventional system currently in operation will be described according to the processing procedure.

(1) The observation team extracts its location as coordinates on the topographic map.

In this case, in open areas, deserts, snowy places, etc., there is a disadvantage in that their location cannot be extracted from the topographic map.

(2) The location of the target is extracted as coordinates on the topographic map. Here's how:

① Use features around the target.

In this case, too, in open areas, deserts, snow-covered places, etc., there is a disadvantage in that the location of the target cannot be extracted from the topographic map.

② When the observation team extracts its position on the topographic map as in the above ①, measure the distance to the target using a mechanical or laser range finder, and use the direction finder to manually adjust the direction of the target. By reading, the position of the target is extracted as coordinates using the relative distance from the observation officer itself to the target.

(3) Wirelessly transmit the coordinates obtained in the above procedure to the turret headquarters (Fire Direction Center (FDC)). At this time, there are the following ways to transfer these coordinates.

① how to communicate in the form of voice; It takes at least a few seconds to transmit this data, and this method is likely to be easily tapped, back-utilized, or jammed if the enemy knows what frequency it is using.

② modulates and transmits a voice signal; Since this method transmits a voice signal through a modulation previously promised by both transmitting and receiving parties, a person who does not have such a modulation and demodulation device cannot know what to say even when intercepting or eavesdropping. However, there is no difference in being vulnerable to interference. In addition, radios used therein are very expensive.

③ how to quantify, encrypt and deliver the specifications for the goal; Since this method takes less than one second to transmit data, it is unlikely that the operating frequency will be known, no eavesdropping will be possible, and the possibility of radio interference will be less. This can be done by attaching a microprocessor subsystem to the radiotelegraph system that connects the observation team to the turret, and allows the use of traditional radios.

(4) The firing control center sends a signal to the observation team confirming that it has received the target specification data (using the same method used by the observation team, among other methods in paragraph (3), which includes the radio of the observation team; Part of the turret's radio system).

(5) The observation team checks the impact point of the shell and sends the corrected data to the firing command center.

(6) The fire control center confirms the receipt of correction data to the observation team (repeated in (4)) and fires the following shells.

(7) Repeat paragraphs (5) and (6) until the observation team or the firing command center determines that the target has been subdued.

However, the current operating system has the following problems.

First, it is impossible to extract the location of the observation team itself or its targets by coordinates when it is impossible to find a feature to be based on the observation team itself or around the target, such as plains, open areas such as deserts and snowy areas.

Second, it takes a long time to obtain the specifications of the target.

Third, there is a high probability that various data of an allied communication system may be eavesdropped or used back by the enemy.

The present invention has been invented in view of the above points, and in any situation, the probability of hitting the target from the first shot is increased, the time for obtaining the shooting target specification is short, the radio communication time is short, the security is excellent, and the error is It is an object of the present invention to provide an artillery shooting target acquisition system and a method of transferring the specifications and acquired specifications so that they can be converted to the conventional method in a sequential manner.

1 is a schematic diagram for explaining the operation of the artillery shooting target specifications acquisition system,

2 is an overview of the shooting target specification acquisition system operated by the observation team and the numerical data input and output of the observation team computer,

FIG. 3 is a side view of the rangefinder, tiltometer, and magnetometer of FIG. 2;

FIG. 4 is a planar layout view of a rangefinder, a tiltometer, and a magnetometer in FIG. 2;

5 is a flowchart showing the acquisition and delivery of shooting target specifications;

6 is a view for explaining the decomposition of the measured magnetic field strength and the slope and the rotation of the coordinate system about two axes in the measurement coordinate system,

7 is an operation diagram of the GPS receiver in the firing command center.

The artillery shooting target acquisition system according to the present invention for achieving the above object is a GPS antenna that receives a signal emitted from a GPS satellite, and receives the signal through the GPS antenna, the longitude and latitude coordinates and WGS-84 rectangular coordinates GPS receiver to obtain the x axis, the long axis to the x-axis, the right direction to the y-axis, the lower direction to the z-axis, the distance meter to find the distance between the observation team and the target, the x, y, z and x, The inclinometer for arranging the y, z axis and the inclination of the x axis and the inclination of the y axis, the x, y, z axis is set to match the x, y, z axis of the range finder, and the magnetic field of the x, y, z axis A computer for receiving the data obtained from the magnetic field measuring instrument, the GPS receiver, the inclinometer, the magnetic field measuring instrument, and the distance measuring instrument for calculating the intensity of the magnetic field, and selectively calculating the magnetic declination and the dip by the IGRFCAL program; On day Observed side system the numerical data having been made in the transceiver for transmission to the transceiver of the shooting command center and side; GPS antenna receiving signals from GPS satellites, GPS receivers receiving signals through the GPS antennas to obtain geographical coordinates, radios receiving numerical data from observation teams, and digitizing from the geographical coordinates and radios It is characterized by comprising a fire command center system comprising a computer for calculating a vector to a target based on the data.

In addition, the artillery shooting target acquisition method according to the present invention, to obtain the position of the observation team by transmitting the data obtained in the form of longitude and latitude coordinates and WGS-84 rectangular coordinates from the GPS receiver through the GPS antenna to the observation team computer Steps; The x, y, z axis of the inclinometer and the x, y, z axis of the magnetic field gauge are aligned with the x, y, z axis of the range finder to measure distance, tilt, and magnetic field with a single button operation. Obtaining the relative position vector between the observation team and the target by obtaining each component of the position vector based on the data obtained from; Transmitting the shooting target specifications to the shooting command center by obtaining the obtained data in accordance with a predetermined format by making a continuous stream, encrypting the encrypted data, and transmitting the numerical data to the shooting command center through the radio; By the data obtained in the form of geographic coordinates from the GPS receiver to calculate the location of the firing command center _{itself, (xp2 i, yp2 i,} zp2 i, timei; i = 1~m) and _(i xp1, yp1 _{i, i} zp1 After extracting the data with the same or closest time _i among the time _i ; i = 1∼n), obtain the vector between the firing command center and the observation team from the position vector obtained by the moving average method. Calculating a position of the target in the shooting command center by obtaining a relative vector between the shooting command center and the target from the vector and the vector; Shooting command center transmits a signal to confirm that the observation team has received the shooting target data, calculates the shooting specifications and delivers the acknowledgment signal and firing shotgun to reach each gun; A second shot induction data transmission step of the observation team confirming and correcting the impact point and transmitting data to induce the second shot to the shooting command center; A firing command center, which transmits a signal confirming that the observation team has received the shooting target data, calculates a shooting specification, and delivers an acknowledgment signal for firing the second shot and firing the second shot; And a repetitive step of repeating the second shot induction data transmission step, the acknowledgment signal transmission, and the second shot firing step until a target overpressure is determined.

In addition, the present invention, in addition to the GPS antenna and GPS receiver for the headquarters in the firing command center system, a GPS antenna and a GPS receiver installed at a remote point, and magnetic azimuth calculation means consisting of a magnetic field measuring instrument or a compass with a telescope to calculate the magnetic declination The apparatus further includes calculating a vector and azimuth of a base line from position data simultaneously received by the two GPS antennas and two GPS receivers from a GPS satellite, and using the vector and the azimuth, the magnetic azimuth calculation means calculates a magnetic azimuth angle. To be characterized.

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the artillery shooting target acquisition system and the method for obtaining the shooting target specification using the same will be described in detail according to the processing procedure.

(1) Observation team (P ₂ ) Acquisition of own position

Figure 1 of the artillery firing target and overall schematic diagram of a specification acquiring the system for explaining the operation of the system, Figure 2 is the observation side (P ₂₎ is an overview of the observation side of the shooting target specification acquisition system operating in (P ₂₎ computer Numerical data input and output.

1 and 2, the position of the observation team P ₂ itself is determined by the latitude and longitude coordinates latt2 _i , longp2 _i , zp2 _i , from the GPS receiver 7 via the GPS (Global Positioning System) antenna 6. time _i ; i = 1 to m) and WGS-84 rectangular coordinates (xp2 _i , yp2 _i , zp2 _i , time _i ; i = 1 to m). It is delivered to the computer 1 of P ₂ and recorded in the memory in the computer 1. At this time, the signal used among the signals emitted from the GPS satellites uses a code signal to simplify the calculation.

On the other hand, the number of data (m) may be set to an appropriate number. If the number of recorded data exceeds m, the first data to be deleted is deleted and again (xp2 _i , yp2 _i , zp2 _i , time _i ; i = 1 to m). In the present embodiment, the coordinate system mainly used by the observation team and the firing command center is a geocentric coordinate system based on WGS-84 (r: radius θ: excitation angle, Φ: longitude) and extracted therefrom. Cartesian coordinate system. This, the position of the antenna using a GPS receiver 7, that is the observation side (P ₂₎ and the position obtained in the firing command center (P ₁₎ is an observation side (P ₂₎ or fire Command Center (P ₁₎ to somewhere Irrespective of whether or not, the antenna 6 of the GPS receiver 7 may be exposed to the ground, regardless of weather conditions such as fog, rain, and snow, and may be acquired at night. Such geocentric and rectangular coordinate systems have some errors due to the inaccuracy of GPS satellites (not shown), but a method for reducing the inherent errors to 10 m or less is described in (4) below. do.

(2) Acquisition of relative position vector (V ₂₃ ) between observation team (P ₂ ) and target (P ₃ )

The purpose in this section is to find the vector V ₂₃ as shown in FIG. 1. If a vector in space knows the distance and direction from the reference coordinate system, the component of the vector can be calculated, which will be described with reference to FIGS. 3 and 4.

3 and 4 are side plan views and planar layout views of the rangefinder 2, the tiltmeter 3, and the magnetometer 4 in FIG. 2. The long axis of (2) is set to the x-axis, the right direction in the state using the range finder (2) is set to the y-axis, and the down direction is set to the z-axis, and the x, y, z-axis and the magnetic field meter of the inclinometer ( The x, y and z axes of 4) are set to match the x, y and z axes of the range finder 2.

Distance measurement, tilt measurement, and magnetic field measurement are possible with just one button operation.The distance obtained at this time is Dist, tilt of x-axis tiltx, tilt of y-axis tilty, magnetic field strength of x-axis Magx ₁ , magnetic field strength of y-axis Magy ₁ Saves the magnetic field strength of the z-axis to Magz ₁ in memory.

Observation team (P ₂ ) Since the x, y, z coordinate of the point where it is located is already obtained as (xp2 _i , yp2 _i , zp2 _i , time _i ; i = 1∼m) in the above paragraph (1), And the dip is selectively calculated through the IGRFCAL program mounted on the computer 1 of the observation team P ₂ and stored in the memory under the name Dec2, Inc2. In other words, this calculation may be made at the firing command center (P ₁ ), which is made through an appointment between the observation team (P ₂ ) and the firing command center (P ₁ ). The reason for performing IGRFCAL by mutual promise is as follows. That is, as shown in FIG. 7, the firing command center P ₁ knows the baseline setting using two GPS receivers and the azimuth in the rectangular coordinate system of the baseline, and extracts it using a precise digital or analog compass together. Since is more accurate than the magnetic declination calculated by interpolation by IGRFCAL, it is more advantageous to calculate the magnetic declination at the turret headquarters if such a system is equipped at the turret headquarters.

One of the purposes of this system is to: First, as shown in FIG. 6, the three-component magnetic field strengths Magx ₁ , Magy ₁ , Magz ₁ measured by the magnetic field meter 4 in a rectangular coordinate system (Xmes, Ymes, Zmes) having an axis for viewing a target as Xmes. ) And Magt1, the composite component of the geomagnetic field, is calculated from the angles (tiltx, tilty) between the Xmes and Ymes axes of the measuring system itself measured by the inclinometer (3). Next, the magnetic field components Magx ₂ , Magy ₂ , and Magz ₂ in each axial direction are calculated in the rectangular coordinate system Xmag, Ymag, and Zmag centered on the magnetic north. Finally, the magnetic field components (Magx ₃ , Magy ₃ , Magz ₃ ) in each axial direction are calculated in the rectangular coordinate system (Xgeo, Ygeo, Zgeo) centered on the true north used in artillery fire. From the last magnetic field components Magx ₃ , Magy ₃ , and Magz ₃ , the azimuth angle (dectgtc) from the true north of the target and the tilt of the straight line (tiltx) from which the target is viewed from the observation team are obtained. In this case, the tilt is calculated from the inclinometer 3 as described above. To extract this dectgtc, two vector rotations should be performed in the following order. At this time, the measured magnetic field strength itself is geomagnetic in space and thus does not change during calculation.

① Rotation in the tilty2 direction about the Xmes axis

The measured tilty is an angle from the horizontal plane, and the angle tilty2 to be actually rotated is an angle between the Ymes axis and the Ymes2 axis after the rotation, and is calculated as follows.

At this time, the sign of tilty2 is the same as the sign of tilty. The magnetic field components Magx2, Magy2 and Magz2 in the new coordinate systems Xmes2, Ymes2 and Zmes2 after rotation are calculated as follows.

② Rotation in the tiltx direction about Ymes2 axis

The magnetic field components Magx2, Magy2, and Magz2 calculated in the above ① are rotated by tiltx about the Ymes2 axis. The magnetic field components Magx3, Magy3, and Magz3 in the new coordinate systems Xmes3, Ymes3, and Zmes3 after rotation are calculated as follows.

This way, the axes Xmes3 and Ymes3 are on the horizontal plane, and Zmes3 is vertically down.

③ Obtain direction of the target (P ₃ )

From the last Magx3, Magy3, and Magz3 obtained in the above ②, the azimuth angle (tgtazm) from the magnetic north of the Xmes3 axis (the data obtained by aiming the target) is calculated as follows.

tgtazm = -arctan2 (Magy3 / Magx3)

Here, a sign of tgtazm (-) indicates that the direction of the target is west of the magnetic north, and (+) indicates that the direction of the target is east of the magnetic north. On the other hand, the magnetic declination Dec2 in the area has already been obtained, and if the sign of Dec2 is negative, the direction of geomagnetism is to the west of true north, and if it is positive, the direction of geomagnetism is to the east of true north. Therefore, the azimuth dectgtc from the true north direction of the target

dectgtc = tgtazm + Dec2

Is calculated.

④ Acquiring the slope of the target (P ₃ )

The inclination of the target P ₃ is already obtained as the inclination tiltx of the Xmes axis in ②.

⑤ Calculation of the vector from the observation team (P ₂ ) to the target (P ₃ )

Each component (x ₂₃ , y ₂₃ , z ₂₃ ) in the Cartesian coordinate system (Xgeo, Ygeo, Zgeo; also known as geographic coordinate system) of the vector (V ₂₃ ) from the observation team (P ₂ ) to the target (P ₃ ) is ,

(x ₂₃ , y ₂₃ , z ₂₃ ) = (Dist * cos (tiltx) * cos (dectgtc), Dist * cos (tiltx) * sin (dectgtc), Dist * sin (tiltx))

Obtained by

(3) delivery of the shooting target specifications;

Among the acquired shooting target specifications, the data to be sent to the shooting command center is as follows.

This will be described with reference to (2) above and FIG. 5 showing a flow chart of shooting target specification acquisition and delivery. As shown in (2) and FIG. 5, the data to be sent differs depending on whether the firing command center P ₁ or the observation team P ₂ performs IGRFCAL.

First, when IGRFCAL is used at the firing command center (P ₁ ) or when the baseline setting and self-declination calculation are performed using the GPS receiver (which is more advantageous than the second method), the observation team's own identification signal (ID) and the observation team's own Position (xp2 _i , yp2 _i , zp2 _i , time _i ; I = 1 to m), distance (Dist), tilt on x-axis (tiltx), tilt on y-axis, magnetic field strength (Magx on x, y, z-axis) ₁ , Magy ₁ , Magz ₁ ), etc. are essential, and the kind of target, the type of shell required, etc. can be added by appointment.

Next, when IGRFCAL is performed by the observation team (P ₂ ) (which is less advantageous than the first method), the observation team's own identification signal (ID) and the observation team's own position (xp2 _i , yp2 _i , zp2 _i , time _i ; i = 1 to m), the vector from the observation team to the target (x ₂₃ , y ₂₃ , z ₂₃ ) is essential, and as with the first method, the type of target, the type of shell required, etc. You can add These data are produced in a series in a pre-determined format, encrypted and transmitted to the firing command center (P ₁ ) as digitized data, not voice, through the observation team's radio. This makes the radio communication time extremely short, making it less likely that the enemy will be informed of the frequency of the allies or intercepted.

(4) Calculation of the position of the target (P ₃ ) in the firing command center (P ₁ )

As shown in FIG. 1, the most demanded shooting command center P ₁ is a vector V ₁₃ from each gun to the target. This can be calculated by knowing the absolute positions of P ₁ and P ₃ . The firing command center P ₁ can extract its position in the geographic coordinate system in several ways. However, in the case of sudden movement at night or under bad weather conditions, it may not be possible to extract its own position as in the case of the observation team P ₂ . However, a relative vector (V ₁₃₎ between the Po and the target (P ₃₎ of the key is shooting command center (P ₁₎ in the shooting, the absolute position of one of the advantages of the present invention is firing command center (P ₁₎ itself Without knowing it, the observation team (P ₂ ) can also calculate the relative vector (V ₁₃ ) between the gun and the target without knowing its absolute position, which can be used to perform accurate shooting.

① Calculate your own position of fire command center (P ₁ )

As shown in FIG. 7, the firing command center P ₁ also has the same GPS antenna 26 and GPS receiver 27 as the observation team P ₂ has. The position of the firing command center (P ₁ ) itself is obtained from the GPS receiver 27 in the form of geographic coordinates (xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to n). It is recorded in the memory of the computer 11 of P ₁ . In this case, it is preferable to set n to be much larger than the number of data (m) of the observation team (P ₂ ) computer (1) .If the number of data exceeds n, the first data is deleted and then (xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to n).

② Calculation of the vector (V ₁₃ ) from the firing command center (P ₁ ) to the target (P ₃ )

By the principle of the GPS system, the absolute position of the receiver contains errors due to inherent causes. However, when two receivers are used, there is a position error of the GPS satellite itself, but the error of the position calculated by the GPS receiver from the signals emitted at the same time in the used satellites is received at the same time because the directions are the same. The relative vector of the two positions, which is calculated by using (Xp2 _i , yp2 _i , zp2 _i , timei; i = 1 to m) obtained in the above (1) and (xp1 _i , yp1 _i , zp1 _i , time _i ; i = The position vectors whose time _i coincide with or closest to time _i are extracted, and the data are calculated by moving average method, respectively (xp2, yp2, zp2) and (xp1, yp1). , zp1), the vector V ₂ between two points is calculated as follows.

On the other hand, each component (x ₂₃ , y ₂₃ , z ₂₃ ) in the geographic coordinate system (Xgeo, Ygeo, Zgeo; also known as the rectangular coordinate system) of the vector V ₂₃ in FIG. 1 is calculated in ⑤ of the above (2). And delivered to the firing command center (P ₁ ) as in (3) above. Therefore, the relative vector V ₁₃ between the shooting command center P ₁ and the target P ₃ as the final object is obtained as follows.

V ₁₃ = V ₁₂ + V ₂₃

(5) Observation Team (P ₂₎ for shooting the target (P ₃₎ of the data transfer acknowledge signal and peat moss Launch

The shooting command center (P ₁ ) sends a signal to the observation team (P ₂ ) confirming that the data of the shooting target (P ₃ ) has been received, calculates the shooting specifications, and fires a shotgun and a shot coal to each gun. The communication at this time, of course, delivers digitized and encrypted data in a very short time, so there is little chance of frequency exposure or eavesdropping.

(6) The observation team (P ₂ ) confirms and corrects the impact point and transmits the data to induce the second shot to the fire command center (P ₁ ).

(7) The shooting command center (P ₁ ) sends a signal to the observation team (P ₂ ) confirming that the data of the shooting target (P ₃ ) has been received, calculates the shooting specifications, and gives each gun a second shot. Fire.

(8) Repeat (6) and (7) above until the observation team (P ₂ ) or shooting command center (P ₁ ) determines that the target has been subdued.

On the other hand, when a problem occurs in part or all of the system, as long as the radio is in operation, it is possible to quickly switch to the conventional method in order to perform minimum target acquisition and target specification transfer.

Next, the firing command center (P ₁ ) sets up a reference line using two GPS receivers, calculates the azimuth angle in the geographic coordinate system of the base line, and uses the telescope's magnetic field meter or compass to determine the point. It describes how to calculate the magnetic declination angle.

This method uses two GPS receivers as opposed to the above-mentioned one GPS receiver. With this method, the magnetic declination angle is calculated at any point under any weather conditions or at night, regardless of where the shooting command center is located. The direction of the gun can be calculated accurately in the geographic coordinate system.

(1) Establishment of baseline and calculation of azimuth of baseline

As shown in FIG. 7, the firing command center P _{1 is} provided with a GPS antenna 26 and a GPS receiver 27 for the headquarters, and a remote point P ₄ distant from there (about 200 m or more in length). ), The antenna 16 of the GPS receiver 17 is installed. In addition, two GPS antennas 16 and 26 are simultaneously received by the GPS satellites, and two GPS receivers 17 and 27 simultaneously receive the signals from the GPS satellites. xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to k) and (xp4 _i , yp4 _i , zp4 _i , time _i ; i = 1 to k) The vector RL ₁₄ is calculated as follows.

In this case, carrier phase data of signals emitted from GPS satellites are used. This method takes more time than using a code signal, is complicated in equipment and operation, but is used relatively backwards. It is also advantageous to adopt the angle since it can be calculated with an error within 0.1 °. Here, the azimuth angle ang14 of the base line is calculated as follows.

ang14 = arctan2 (RL _14y / RL _14x )

Here, if the sign of ang14 is (+), the direction of this base line is east from true north, and (-) means that the direction of this base line is west from true north.

(2) Calculation of magnetic declination angle using magnetic field meter or compass with base line and telescope

As shown in FIG. 7, the center of the magnetic field measuring instrument or the compass is positioned directly below the point P ₁ , and the point P ₄ is viewed by a telescope. Then, turn the rotating numeric plate of the compass so that ang14 obtained in the above (1) coincides with the axis of the telescope. Then, as shown in FIG. 7, the direction of the true north can be known, and the number of directions in which the north pole of the compass points is self-declination.

(3) Use of self-declination

Using the self-declination angle obtained as described above, each artillery may set the direction and elevation of the artillery fired by the firing command center P ₁ using its own compass.

As described above, the artillery shooting target acquisition system according to the present invention can achieve the following remarkable effects.

First, even when the observation team itself or a feature around the target cannot be found, such as plains, open areas such as deserts, and snow-covered areas, the observation team itself or the position of the target can be extracted in Cartesian coordinates. Therefore, if you can observe any one target, you are likely to hit the target from the first round under any circumstances.

Second, since the operation of obtaining the specifications of the target is only one time, the time for obtaining the shooting target specifications is short.

Third, the radio communication time between the observation team and the shooting command center is short, and the security is excellent because the contents cannot be known even if the enemy knows the frequency.

Fourth, when an error in the system occurs, it is possible to switch to the conventional method quickly and sequentially. That is, the system described in the present invention greatly improves the performance of the system currently being used.

Claims (2)

A GPS antenna 6 receiving a signal emitted from a GPS satellite, Signals are received through this GPS antenna (6), and longitude and latitude coordinates (latp2 _i , longp2 _i , zp2 _i , time _i ; i = 1 ~ m) and WGS-84 rectangular coordinates (xp2 _i , yp2 _i , zp2 _i) GPS receiver 7 to obtain time _i ; i = 1 ~ m) Set the long axis as the x-axis, the right direction as the y-axis, and the lower direction as the z-axis, and the rangefinder (2) for obtaining the distance (Dist) between the observation team (P ₂ ) and the target (P ₃ ) Inclinometer 3 for arranging the x, y, z axis and the x, y, z axis of the range finder 2 in agreement, and obtaining the tilt of the x axis and the tilt of the y axis, The magnetic field measuring device for arranging the x, y, z axes to match the x, y, z axes of the range finder 2 and obtaining the intensity (Magx ₁ , Magy ₁ , Magz ₁ ) of the magnetic fields of the x, y, z axes ( 4), A computer (1) for receiving data obtained from the GPS receiver (7), the inclinometer (3), the magnetic field measuring device (4), and the distance measuring device (2) and selectively calculating magnetic declination and dip by an IGRFCAL program; An observation team (P ₂ ) system comprising a radio (5) for transmitting numerical data calculated by the computer (1) and conforming to a predetermined format to the radio (15) on the firing command center (P ₁ ) side; A GPS antenna 26 receiving a signal emitted from a GPS satellite, A GPS receiver 27 which receives a signal through the GPS antenna 26 and obtains geographic coordinates (xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to n), The radio 15 receiving numerical data from the observation team P ₂ , and Calculating a vector V ₁₃ to a target P ₃ based on the geographical coordinates xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to n and the numerical data from the radio 15. An artillery shooting target acquisition system, characterized in that it comprises a shooting command center (P ₁ ) system provided with a computer (11). Latitude and longitude coordinates (latp2 _i , longp2 _i , zp2 _i , time _i ; i = 1 ~ m) and WGS-84 rectangular coordinates (xp2 _i , yp2 _i , zp2) from GPS receiver 7 via GPS antenna 6 acquiring the position of the observation team P ₂ , which transmits the data obtained in the form of _i , time _i ; i = 1 to m) to the observation team P ₂ computer 1; The x, y, z axis of the inclinometer (3) and the x, y, z axis of the magnetic field measuring device (4) are aligned with the x, y, z axis of the range finder (2) to measure the distance with a single button operation, between tilt measurement, a magnetic field measurement, the respective components of the position vector (V ₂₃₎ on the basis of the data obtained therefrom _{(x 23, y 23, z} 23) to obtain the observation side (P ₂₎ and a target (P ₃₎ Obtaining a relative position vector V ₂₃ ; The shooting target specifications obtained by transferring the acquired data to a shooting command center (P ₁ ) as a digitized data through the radio by encrypting the obtained data according to a predetermined format to a continuous sequence to the shooting command center (P ₁ ). Delivering; From the GPS receiver 27, the position of the firing command center P ₁ itself is calculated from the data obtained in the form of geographical coordinates (xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 to n), and (xp2 _i , yp2 _i , zp2 _i , time _i ; i = 1 ~ m) and the closest or the nearest time _i of the table (xp1 _i , yp1 _i , zp1 _i , time _i ; i = 1 ~ n) And extract the extracted data from the position vector obtained by the moving average method to obtain a vector (V ₁₂ ) between the firing command center (P ₁ ) and the observation team (P ₂ ), and the vector (V ₁₂ ) and the vector ( Calculating the position of the target P ₃ at the firing command center P ₁ by obtaining a relative vector V ₁₃ between the firing command center P ₁ and the target P ₃ from V ₂₃ ); The firing command center (P ₁ ) transmits a signal confirming that the observation team (P ₂ ) has received the data of the shooting target (P ₃ ), calculates the shooting specifications, and delivers an acknowledgment signal to reach each gun and fire the shotgun. And super coal launch step; A second shot induction data transmission step of transmitting observation data (P ₂ ) to the shooting command center (P ₁ ) by identifying and correcting the impact point to induce a second shot; The firing command center (P ₁ ) transmits a signal confirming that the observation team (P ₂ ) has received the data of the shooting target (P ₃ ), calculates the shooting specifications, and receives each gun to fire the second shot. Transmitting a confirmation signal and firing a second shot; Acquiring artillery shooting target specifications and transmitting the obtained specifications, characterized in that it comprises a repeating step of repeating the transmission of the second shot guidance guide data and the transmission of the acknowledgment signal and the second shot firing until the determination of target overpowering Way.

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