DE102014015833A1 - A method for data transmission of data to a projectile during the passage of a gun barrel assembly, wherein a programming signal is generated with the data from a programming unit - Google Patents

Abstract

The invention relates to a method for data transmission of data to a projectile (10) during the passage of a weapon barrel arrangement (1, 2), wherein a programming signal (17) with the data is generated by a programming unit (16), wherein the programming signal (17) is transmitted to the projectile (10) by means of a programming section (18), the programming signal (17) being received by a receiving coupler (21) of the projectile (10), the data being output by means of a receiving part (22) of the projectile (10) the programming signal (17) are reconstructed. A larger amount of data can be transmitted to the projectile (10) in that the data is transmitted temporally in parallel by means of several carriers.

Description

The invention relates to a method for data transmission of data to a projectile during the passage of a gun barrel assembly, with the features of the preamble of claim 1, wherein a programming signal is generated with the data from a programming unit.

Furthermore, the invention relates to a weapon barrel assembly having the features of the preamble of claim 10.

Furthermore, the invention relates to a projectile with the features of the preamble of claim 11.

The gun barrel assembly has a gun barrel, and preferably a muzzle brake. After ignition of a propellant, the projectile passes through the barrel. First, the muzzle velocity is measured. The gun barrel assembly has a speed measuring section.

From the DE 10 2006 058 375 A1 a method for measuring the muzzle velocity of a projectile is known. The muzzle velocity is measured on a gun barrel or on a muzzle brake. The weapon barrel or muzzle brake is used as a waveguide. The waveguide is operated below its cutoff frequency. While the projectile is moving in the waveguide and before the projectile leaves the waveguide, a prediction of the velocity of the projectile can be made. A signal generator of the speed measurement section generates a carrier in continuous operation or a modulated signal.

From the DE 10 2008 024 574 A1 Another method for measuring the muzzle velocity of a projectile by means of a waveguide is known.

The data transmission or programming of the projectile takes place in particular in the region of the mouth of the corresponding weapon barrel arrangement. A programming signal with the data is generated by a programming unit. By means of a programming section, the programming signal is transmitted to the projectile. While the projectile moves past the programming section, the programming signal is transmitted to the projectile by means of the programming unit. This data can be used to trigger a detonator for air blasting ammunition or to control trajectory influencing devices in guided projectiles. It is advantageous if the transmission of the programming signal takes place in the region of the muzzle brake. The gun barrel assembly or a portion of the gun barrel assembly is used as a waveguide, wherein the waveguide is operated below its cutoff frequency. The field used in this case is highly concentrated in the weapon barrel or in the waveguide and therefore exits only a little from the waveguide or the weapon barrel arrangement. This waveguide is also suitable for measuring the muzzle velocity of the projectile.

From the DE 10 2010 006 530 A1 is a corresponding programmable ammunition known, on the one hand allows programming and to which on the other an energy is transmitted. The programming and the energy transfer now takes place during the passage of the projectile through a gun barrel, a muzzle brake or the like, wherein the corresponding waveguide is operated below the cutoff frequency. The projectile has an energy storage, an electronics and an ignition and at least one receiving part for receiving the programming signal sent for programming. In this case, the projectile is combined with an energy transmission unit in such a way that a further signal is conducted to the energy store via the same or via a further sensor and the energy store is thus charged.

From the generic DE 10 2010 006 528 A1 A method of programming a projectile during a passage through a gun barrel or through a muzzle brake is known. Further, as the projectile traverses the waveguide, the muzzle velocity is measured. The measured muzzle velocity is fed to a programming section. From a signal generator, a carrier frequency f1 is generated. There is a modulation of the carrier frequency with the corresponding data to be transmitted - such as a disassembly time - by means of a programming unit. This useful signal is sent from the programming section and received by the projectile. The carrier frequency f1 is below the cutoff frequency of the waveguide. This modulated programming signal serially transmits the data to the projectile. The projectile is associated with a receiving coupler, which is electrically connected to a memory or processor in the projectile. If the projectile passes through the waveguide, the projectile receives the programming signal by means of capacitive and / or inductive coupling. For programmable ammunition, energy needs to be provided to the projectile for the integrated electronics and for starting the ignition chain. The transmission is inductive and / or capacitive. For energy transmission, an existing or further transmission coupler is used, which acts on a sensor in the projectile with the necessary energy in the form of another frequency, which in turn loads a memory electrically connected to the sensor.

The generic method and the genus-forming gun barrel assembly and the generic projectile are not yet optimally trained. The data to be transmitted is serial, i. H. sent consecutively. The data volumes transferred here are small. Modern, programmable ammunition types with corresponding projectiles can receive new functions and therefore require more information, ie. H. a larger amount of data. The amount of data is transferred to the projectile within a certain programming path. The programming path can also be called a programming path. The programming path is the length of the programming section within which data transfer occurs as the projectile passes through this programming path.

For structural reasons, the programming path can not be extended arbitrarily. If the programming path lengthened, in particular the compatibility with sub-caliber ammunition types can be lost. Unterkalibermunitionstypen have dissolving sabot, with the dissolving sabot after exiting the barrel of the sub-caliber projectile move radially outward. These sabots collide with extended programming path with the inner surface of the programming section and can damage them.

Extending the programming path increases the weight of the programming section. An increase in weight at the mouth of the weapon barrel has a negative impact on the gun dynamics with respect to the mass to be moved and the vibration behavior of the weapon barrel assembly. Therefore, the programming path can not be extended to increase the transferable amount of data.

If the clock rate for the data transmission is increased, this may also hit a limit as the bandwidth increases. Increasing the bandwidth may allow more noise energy to enter the transmission path and prevent proper programming.

A reduction in the muzzle velocity leads to an overall longer residence time of the projectile in the programming path, whereby more information or larger amounts of data can be transmitted. However, a high projectile velocity is the essential parameter for the effectiveness of the projectile in the target.

Another disadvantage of the solutions mentioned above is that the programming unit can not recognize at which position of the programming section, the projectile is at a certain time. Therefore, it is unclear whether the projectile is even in the reception area, i. H. in the area of the programming path, and when is the optimal time for the programming process or for the data transmission. Therefore, there are significant uncertainties in the synchronization of programming, the synchronization consists for example of an estimate of the duration of the projectile from the release of the firing pin to the mean time of arrival within the programming path.

The invention is therefore based on the object to provide a method for programming a projectile, a projectile and a weapon barrel assembly, wherein the method, the projectile and the weapon barrel assembly are designed such that a larger amount of data can be transmitted to the passing projectile.

This object of the invention is based is achieved by a method having the features of claim 1, a gun barrel assembly with the features of claim 10 and a projectile with the features of claim 11.

The data is transmitted parallel in time. Instead of a time-serial data transmission, a temporally parallel data transmission is used. A frequency division multiplexing method can be used. Preferably, an orthogonal frequency division multiplexing method is used for data transmission. Such orthogonal frequency division multiplexing is also referred to as Orthogonal Frequency Division Multiplexing (OFDM). Alternatively, a code division method could be used. Several carriers are used, the carriers being orthogonal to one another. The frequency spacing between the individual carriers is chosen so that an orthogonality arises. The frequency spacing between adjacent carriers is particularly equidistant. The data to be transmitted are then distributed to the carriers and transmitted simultaneously. The data bits are used to modulate the amplitude of the carriers. Thanks to the orthogonality, this method allows the data to be reconstructed from the programming signal. The data can be represented as a word with B bits. The programming unit divides the bits among the individual carriers, with the individual carriers being transmitted simultaneously. In a preferred embodiment, each carrier is assigned exactly one bit. It is conceivable that in an alternative embodiment, several bits are transmitted in temporal succession.

To ensure reception, it is advantageous for the receiver to comply with a sampling interval and a corresponding sampling frequency. It should be noted that the sampling frequency is not equal to the frequency used for speed measurement.

It is sent to the projectile preferably a pilot tone, wherein the pilot tone is detected by the receiving part, wherein the reception of the pilot tone starts the reception of the useful signal with the data. The reception of the pilot tone starts the scanning of the programming signal, in particular of a useful signal. It is conceivable that the pilot tone will be sent permanently. A separate transmit coupler for transmitting the pilot tone may be provided, this transmit coupler also being arranged along the programming path. In a preferred embodiment, however, the pilot tone is transmitted together with the useful signal via a common transmit coupler.

The programming signal sent by the programming section has the pilot tone in a preferred embodiment. The pilot tone is recognized and evaluated by the projectile. As soon as its signal strength is sufficient, the projectile recognizes its optimal position within the programming path and picks up the further signal components, namely a useful signal. The payload is the sum of the modulated carriers. It is therefore no longer necessary to synchronize on the transmitter side with the projectile. The pilot tone starts the programming of the projectile. The pilot tone solves the synchronization problems.

The value for the clock interval or the sampling frequency is given to the projectile in one embodiment before the ignition. In a particularly advantageous embodiment of the method, information about the clock interval, for example the value for the clock interval or the value for the sampling frequency, is sent to the projectile during programming. The angular frequency of the pilot tone is preferably proportional to the sampling frequency or corresponds to the sampling frequency. This reduces the amount of information that must be injected into the projectile before loading. Characterized in that the value for the sampling interval or the sampling frequency is sent via the programming section to the projectile, a simplification of the design of the projectile can be achieved. In the projectile no oscillator for setting the sampling frequency or the sampling interval is necessary. The sampling intervals can be clocked by means of a square wave generator, wherein the sampling frequency is generated from the pilot tone and used to control the square wave generator.

In a particularly preferred embodiment, the method is carried out within a waveguide, wherein the waveguide is operated below its cutoff frequency. As a result, the field is focused on the gun barrel assembly. The frequencies of the carriers are below the cutoff frequency. The pilot tone frequency is below the cutoff frequency. The frequency for measuring the muzzle velocity is below the cutoff frequency.

The aforementioned disadvantages are therefore avoided and corresponding advantages are achieved.

There are now a variety of ways to design and further develop the method according to the invention, the gun barrel assembly according to the invention and the projectile according to the invention. For this purpose, reference may first be made to the claims subordinate to claim 1. In the following, a preferred embodiment of the invention will be explained in more detail with reference to the drawing and the associated description.

In the drawing shows:

1 in a schematic, detailed sectional view of a mouth region of a first gun barrel assembly,

2 in a schematic, detailed sectional view of a mouth region of a second gun barrel assembly,

3 in a schematic representation of a programming unit, and

4 in a schematic representation of a receiving part.

In 1 and 2 are two different gun barrel arrangements 1 . 2 shown. The gun barrel arrangements 1 . 2 may be part of a gun, preferably a 35mm gun. The gun barrel arrangement 1 . 2 can have a 35mm caliber.

The two gun barrel arrangements 1 . 2 each have a gun barrel 3 on, but here only the free end (unspecified) of the barrel 3 is shown. At this end of the barrel 3 each is a muzzle brake 4 . 5 arranged. The muzzle brakes 4 . 5 each have a first to the gun barrel 3 subsequent narrower area 6 , a widening area 7 and another end area 8th on. In the expanding area 7 are corresponding openings 9 educated. Through the openings 9 a part of the corresponding combustion gases can escape laterally.

The muzzle brakes 4 . 5 Now differ first by the fact that the muzzle brake 4 a longer, narrower range 6 as the muzzle brake 5 has, wherein the end portion 8th the muzzle brake 5 is longer than the end area 8th the muzzle brake 4 ,

Furthermore, in 1 and 2 one projectile each 10 shown schematically, the projectile 10 the gun barrel arrangement 1 . 2 in the weft direction 11 passes. In the gun barrel layout 1 . 2 , especially in the muzzle brake 4 . 5 , here in the narrower area 6 is a speed measurement section 12 arranged. By means of the speed measuring section 12 is the muzzle velocity of the projectile 10 measurable. By means of the speed measuring section 12 becomes a measuring signal 13 determined. The measuring signal 13 now serves, in one procedural step 14 "Muzzle velocity calculation" to calculate the muzzle velocity V0. The maximum speed of the programmable projectile 10 may for example be 1100 m / s.

In a subsequent process step 15 now becomes the disassembly time of the projectile 10 calculated. The method described here is suitable for data transmission and for programming ammunition, ie projectiles 10 of any kind, but in particular it is suitable for Luftsprengmunition. The projectile 10 may in particular be designed as an air blast ammunition (Air Burst ammunition), wherein the projectile 10 is caused by a Zerlegeladung during the flight after a decomposition time to explode. Alternatively, the projectile 10 be steerable, with appropriate data to the projectile 10 are transferable.

In a further method step is now in a programming unit 16 programming the projectile based on the calculated decomposition time 10 performed. This is discussed in detail in 3 illustrated programming unit 16 a programming signal 17 generated.

The programming signal 17 gets to a programming section 18 forwarded (cf. 1 and 2 ). The programming section 18 is part of the weapon barrel arrangement 1 . 2 , The programming section 18 is preferably the muzzle brake 4 . 5 assigned. The programming section 18 is in the case of the muzzle brake 4 then to the speed measuring section 12 in the narrower area 6 arranged. In the case of the muzzle brake 5 is the programming section 18 the end area 8th assigned.

The programming section 18 now has a transmit coupler 19 on. The transmitting coupler 19 becomes the programming signal 17 fed. The transmission coupler 19 may be formed by a coil or by a plurality of spaced apart coil turns. The transmission coupler 19 extends in the firing direction 11 along a programming path 20 , As will be explained in detail below, the programming distance 20 be limited to a length of less than 3 cm, less than 1 cm, or less than 0.5 cm, in particular to a length of 1 mm. With a muzzle velocity of a maximum of 1100 m / s, this results in a minimum programming time of T = 0.9 μs.

Along the programming path 20 is the at least one transmit coupler 19 arranged. The transmission coupler 19 is here in a unspecified waveguide. The end region serves as waveguide 8th or the narrower range 6 the muzzle brake 4 . 5 , It is conceivable that in an alternative embodiment the weapon barrel 3 is used as a waveguide. The transmission coils of the transmit coupler, not shown 19 are positioned at a distance from each other.

The projectile 10 has a receiving coupler 21 and a reception part 22 on. The receiving coupler 21 takes while flying through the programming path 20 the transmitted programming signal 17 and leads it to the receiving section 22 further. The reception part 22 evaluates the received programming signal 17 out.

In a preferred embodiment of the method and the programming unit 16 indicates the programming signal 17 two signal components, namely on the one hand a useful signal 23 and on the other hand, a pilot tone 24 , on. In the useful signal 23 they are the projectile 10 to be transmitted data, in particular with respect to the cutting time.

The pilot tone 24 now serves first to the receiving part 22 of the projectile 10 due to the signal strength of the pilot tone 24 the optimal position of the projectile 10 within the programming section 18 , namely within the programming path 20 , to receive the data recognizes. The pilot tone 24 is from the projectile 10 within the programming path 20 receivable. Once the signal strength of the pilot tone 24 sufficient, takes the projectile 10 via the reception coupler 21 and thus also over the receiving part 22 the useful signal 23 on. There is therefore no further synchronization on the transmitter side with the projectile 10 ie with the receiver side required. By means of the pilot tone 24 is the timing between the speed measurement and the transmission of the programming data, namely the programming signal 17 simplified. The pilot tone 24 makes it possible to simplify the data transfer and the complexity of the process and the projectile 10 to reduce. By means of the pilot tone 24 Synchronization problems in bullet programming are reduced, avoiding miss or non-programming and increasing the hit rate. It is conceivable, the pilot tone 24 to send permanently and as soon as a useful signal 23 This has been created from then also to send until the projectile 10 the gun barrel arrangement 1 . 2 has left.

In one embodiment of the method, the projectile 10 ie giving ammo a value for one clock interval before the kill. In a preferred embodiment of the method, the pilot tone 24 however, used to provide information for a sampling interval or information about the sampling frequency to the receiving part 22 to hand over. This reduces the amount of information that the projectile 10 must be embossed for charging. Due to the fact that the clock interval is from the pilot tone 24 can be extracted, this is not an additional oscillator in the receiving part 22 of the projectile 10 more required. This results in a component simplification.

The following is allowed on the structure and operation of the programming unit 16 in detail on the basis of 3 To be received.

Due to the calculated decomposition time now a word 25 generated with B bits. The individual bits are here designated A _{1 / N} , A _{2 / N} ,..., A _b ,..., A _{B / N.} From the measured muzzle velocity of the projectile 10 the decomposition time as well as possibly additional information is considered as one word 25 represented with B bits. The respective "1" or "0" are assigned to the respective A _b . For a 35 mm caliber weapon barrel, B = 26 bits should now apply in the following. In another embodiment of the method, however, it is conceivable to transmit even larger amounts of data with B> 26 bits or smaller amounts of data or with B <26 bits.

The disadvantages mentioned above are now avoided by the fact that the data are transmitted temporally in parallel by means of several carriers. Instead of a time-serial data transmission, a temporally parallel data transmission is proposed. In particular, an OFDM method, ie, an orthogonal frequency division multiplexing method is used. This makes it possible to maintain or reduce the programming time with a larger data volume. The programming path 20 can be maintained or reduced (cf. 1 and 2 ). The clock rate does not have to be increased or can even be reduced.

Since no time-series transmission is used, the passing projectile can 10 decide for yourself when the best time to receive the data is. This means that a timing between the speed measurement and the transmission of the programming signal 17 can be omitted. This simplifies data transfer and reduces complexity. By allowing higher data volumes to be transmitted, the projectile functions are either more precisely controllable or it is conceivable to enable additional functions.

The number of samples is N + 1.

First, a number N greater than 2 × B is selected. Thus, in case B = 26, N> 52 should be.

The following conditions apply: q + b is not an integer with b = 1 / N, ..., B / N = 26 / N and q = 1 / N, B / N = 26 / N q - b is not an integer with b = 1 / N, ..., B / N = 26 / N and q = 1 / N; ..., B / N = 26 / N

On the one hand, to reduce the influence of aliasing effects and, on the other hand, to fulfill the above condition, N is preferably a prime number which is greater than 26. For example, N = 103 can be chosen here as the prime number.

This results in the sampling interval T _A from the programming time T _A = T _PROG / N. The sampling interval T _A can be, for example, 0.9 μs. This results in a sampling frequency f _A = N / T _PROG = 114.4 MHz.

Preferably, this sampling frequency f _A does not correspond to the frequency which is used for the speed measurement. For example, a frequency of 30 MHz can be used to measure the speed.

From the sampling interval T _A are now in a process step 25 generates the carrier frequencies. The carrier frequency ω _b are formed for a total of B = 26 carriers.

In one process step 26 the phase shifts φ _{b are} generated. The amplitudes A _b are in one process step 27 predistorted or preamplified.

In the process step 28 the modulation takes place with the carrier and the corresponding phase shifts. In this case, all the terms A _{b are} multiplied by the corresponding term: (1 / ω _b ) × sin (ω _b × z × T _A -φ _b ), the multiplication being performed numerically in a microprocessor. The factor (1 / ω _b ) serves to ensure that the received voltage values for the amplitudes in the receiving part 22 (see. 4 ) are the same size.

liefert.In a subsequent process step 29 Now the summation takes place over all carriers ie over all components (1 / ω _b ) · sin (ω _b · z · T _A - φ _b ). Subsequently, the summed signal is a digital-to-analog converter 30 fed to the signal

supplies.

liefert. Dieses zeitlich kontinuierliche Signal u(t) wird nun einem Verstärker 32 und von da aus dem Sendekoppler 19 zugeführt. Ferner wird dem Sendekoppler 19 der Pilotton 24 zugeführt.Subsequently, the signal u _A (t) becomes a time discrete-to-time continuous converter 31 fed to the signal

supplies. This time-continuous signal u (t) now becomes an amplifier 32 and from there the transmission coupler 19 fed. Furthermore, the transmitting coupler 19 the pilot tone 24 fed.

wird dazu einem Verstärker 33 zugeführt, der den verstärkten Pilotton 24 liefert.The unamplified pilot signal, which initially has the form

becomes an amplifier 33 fed, the amplified pilot tone 24 supplies.

This results in the programming signal 17 in the form of a transmission current at the input of the transmit coupler 19 - In particular a corresponding coil - is applied:

The second term is used, among other things, in the receiving section 22 to generate the clock rate T _A.

The phases φ _b are with the programming unit 16 each chosen so that after the summation no spikes appear in the received signal. With these measures, the analog-to-digital converter 42 be used optimally.

The frequencies of the carriers of the programming signal 17 are in particular smaller than the cutoff frequency of the waveguide. The electromagnetic field decreases exponentially in the direction of the waveguide, causing the corresponding field on the gun barrel assembly 1 . 2 is limited. The fact that the frequencies are below the cutoff frequency of the waveguide, the susceptibility of the method is low.

The reception part 22 , which is in the projectile 10 located and in 1 and 2 is shown schematically, receives at the output of the receiving coil a corresponding receiving voltage, which is dependent on the time:

Now this signal becomes a bandpass 34 supplied to generate the sampling interval T _A and on the other hand monitor the signal strength. Represents a threshold detector 35 determines that the amplitude 2πA ₀ / T _{A is} constant, becomes a start pulse 36 to a scan 37 Posted. Furthermore, now becomes a square wave generator 38 operated with the determined clock interval T _A , wherein a corresponding signal also the sampling 37 is supplied.

When scanning 37 also becomes an index counter 39 for the values n = 0, 1, 2, ... N used.

The scan 37 will now have a second bandpass 40 the corresponding useful signal 23 in the form ΣA _b cos (ω _b · t - φ _b ) is supplied. This useful signal 23 is sampled at the sampling frequency f _A. As soon as there are N + 1 samples, the index counter stops 39 the scan. The sampled signal 41 is called s _A (t):

This signal 41 Namely s _A (t) - becomes an analog-to-digital converter 42 fed.

After the analog to digital conversion, the samples s (n * T _A ) become a shift register for all N + 1 samples 43 saved. The values in the shift register 43 s (n · T _A ) become a Fourier transformer 44 fed:

in einem Verfahrensschritt 46 ausgewertet. Diese Datenverarbeitung geschieht digital.In this case, the amount of Fourier transformation S _A (ω _q ) at the angular frequency

in a process step 46 evaluated. This data processing happens digitally.

Now, if the magnitude of the Fourier transform of the sampled signal s _A (t) is evaluated at the angular frequency ω _q = ω _b , then a value other than 0 is calculated only when A _b = 1. If A _b = 0, a zero is calculated. It is thus possible to receive the bits A _{b of} the word parallel in time.

With an appropriate choice of parameters, the FFT parallel data stream programming algorithm can also be used. The determined word 45 can now within the projectile 10 continue to be used to set the disassembly time.

The aforementioned disadvantages are therefore avoided and corresponding advantages are achieved.

LIST OF REFERENCE NUMBERS

1

Barrel arrangement

2

Barrel arrangement

3

barrel

4

muzzle brake

5

muzzle brake

6

narrower range

7

extended area

8th

end

9

opening

10

projectile

11

weft direction

12

Speed measurement section

13

measuring signal

14

Process step "Muzzle velocity calculation"

15

Process step "Calculation of the cutting time"

16

programming unit

17

programming signal

18

programming section

19

transmit coupler

20

programming track

21

A receive

22

receive part

23

payload

24

pilot tone

25

Process step "Generate carrier frequencies"

26

Process step "Create shift phases"

27

Process step "predistorting amplitudes"

28

Process step "Modulation with carrier"

29

Process step "summation of all carriers"

30

Digital-to-analog converter

31

Time-discrete-to-time continuous converter

32

amplifier

33

amplifier

34

bandpass

35

Schwelldetektor

36

start pulse

37

scan

38

square wave generator

39

index counter

40

bandpass

41

Signal s _A (t)

42

Analog-to-digital converter

43

shift register

44

Fourier transformer

45

word

46

Process step "Evaluation of the Fourier transforms at the angular frequency of the carriers"

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102006058375 A1 [0005]
• DE 102008024574 A1 [0006]
• DE 102010006530 A1 [0008]
• DE 102010006528 A1 [0009]

Claims (13)

Method for data transmission of data to a projectile ( 10 ) during the passage of a gun barrel assembly ( 1 . 2 ), wherein a programming signal ( 17 ) with the data from a programming unit ( 16 ) is generated, wherein the programming signal ( 17 ) by means of a programming section ( 18 ) to the projectile ( 10 ), the programming signal ( 17 ) from a receiving coupler ( 21 ) of the projectile ( 10 ) is received, wherein by means of a receiving part ( 22 ) of the projectile ( 10 ) the data from the programming signal ( 17 ) are reconstructed, characterized in that the data are transmitted temporally parallel by means of multiple carriers. A method according to claim 1, characterized in that an orthogonal frequency multiplexing method is used for data transmission. A method according to claim 1 or 2, characterized in that a plurality of carriers are used, wherein the carriers are orthogonal to each other. Method according to one of the preceding claims, characterized in that each bit to be transmitted is assigned a separate carrier. Method according to one of the preceding claims, characterized in that the programming signal ( 17 ) a useful signal ( 23 ), wherein the projectile ( 10 ) a pilot tone ( 24 ), the pilot tone ( 24 ) from the receiver ( 22 ), whereby the reception of the pilot tone ( 24 ) the reception of the useful signal ( 23 ) starts with the data. Method according to the preceding claim, characterized in that the pilot tone ( 24 ) Contains information about a sampling interval T _A or a sampling frequency f _A. Method according to the preceding claim, characterized in that from the pilot tone ( 24 ) a sampling interval T _{A is} extracted, wherein a square-wave generator ( 38 ) of the receiving part ( 22 ) is operated with a corresponding sampling frequency f _A , wherein the rectangular generator ( 38 ) the sampling of the useful signal ( 23 ) controls. Method according to one of the preceding claims, characterized in that the programming signal ( 17 ), in particular the useful signal ( 23 ), is sampled at the sampling frequency f _A , wherein the detected samples are a Fourier transformer ( 44 ), wherein the magnitude of the Fourier transform of the sample signal at the circuit frequencies of the carriers are evaluated to obtain the data. Method according to one of the preceding claims, characterized in that at least part of the weapon barrel arrangement ( 1 . 2 ) is used as a waveguide, wherein the waveguide is operated below its cutoff frequency. Gun barrel arrangement ( 1 . 2 ) for carrying out a method according to one of the preceding claims, having a programming unit ( 16 ) and with a programming section ( 18 ), wherein a programming signal ( 17 ) with the data from a programming unit ( 16 ) is generated, wherein the programming signal ( 17 ) by means of a programming section ( 18 ) to the projectile ( 10 ), characterized in that the programming signal ( 17 ) has a plurality of temporally parallel transmitted carrier. Projectile ( 10 ) for carrying out a method according to one of the preceding claims, wherein the projectile ( 10 ) a receiving part ( 22 ), wherein of the receiving part ( 22 ) a programming signal ( 17 ) is receivable with data, characterized in that the programming signal ( 17 ) has a plurality of carriers transmitted in parallel in time, the data from the programming signal ( 17 ) by means of the receiving part ( 22 ) are reconstructable. Projectile ( 10 ) according to the preceding claim, characterized in that with the projectile ( 10 ) a pilot tone ( 24 ), wherein the exceeding of a threshold value of the pilot tone ( 24 ) the reception of the useful signal ( 23 ) starts. Projectile ( 10 ) according to one of the preceding claims, characterized in that from the pilot tone ( 24 ) a sampling interval T _{A is} extractable, wherein the receiving part ( 22 ) a square wave generator ( 38 ) and the square wave generator ( 38 ) is operable with a corresponding sampling frequency f _A.

Images