KR200262132Y1 - Adaptive jamming signal generator for pulse and tone - Google Patents

Abstract

The present invention is a reception power detection means for measuring the average power of the communication signal power of the disturbing counterpart received through the antenna; Tone signal generating means for generating a jamming signal to be sent to the counterpart to be disturbed; Tone / pulse conversion means for converting the transmission jamming signal generated by the tone signal generation means into a tone or pulse form by a timer using a counter; Signal ratio detection means for detecting a signal ratio of the received signal to the transmission jamming signal from the average power of the disturbing counterpart detected by the received power detection means; Adaptive noise generating means for synthesizing the signal ratio detected by the signal ratio detecting means and the transmission jamming signal generated by the tone signal to produce noise having the same power as the signal received by the antenna; Adaptive tone and pulse jamming signal comprising an adaptive jamming signal generating means for amplifying the adaptive noise generated by the adaptive noise generating means to a gain according to an arbitrarily set JSR to generate a transmission jamming signal adapted to the power of the received signal. Provide a generator.

The present invention as described above is to minimize the jamming signal transmission power loss by adaptively transmitting a jamming signal having a JSR arbitrarily set according to the received power.

Description

Adaptive jamming signal generator for pulse and tone

The present invention relates to an adaptive pulse and tone jamming signal generator. In particular, when applying a jamming signal to a link of a wireless communication system, even if any modulator or spreader is communicating, The present invention relates to an adaptive jamming signal generator capable of adaptively transmitting a pulse jamming signal or a communication jamming signal having a received jamming signal power VSreceived Signal Power Ratio (hereinafter referred to as JSR). .

In a general wireless communication system, an arbitrary transmitting station and a receiving station wirelessly transmit and receive data within a frequency band promised to each other. Such a wireless communication system is continuously fixed through an arbitrary frequency band according to its communication method. When occupying a band and performing communication (frequency division multiple access method; FDMA), and when communicating with different occupancy time for a frequency band (time division multiple access method; TDMA), It can be divided into a case of communicating and a case of communicating through a spreader with different codes (code division multiple access method; CDMA).

Particularly in the case of electronic warfare, when a wireless communication system using any modulation and demodulation method or a spreader is transmitting and receiving data, a jammer system as shown in FIG. 1 is used to prevent communication of this data. use.

These jammers are classified into wide band jammers, partial band jammers, tone jammers, pulse jammers, and multiple tone jammers. By transmitting the excitation frequency, the receiver does not properly recover the data.

In particular, the pulse and tone jamming signal generators of the jammer system are classified into two types according to whether or not the timer is controlled using a counter. One is a pulse jamming signal generator, which is periodically turned on and off under the control of a timer. The other is the tone jamming signal generator, in which the switch is always on.

2 is a block diagram of a conventional pulse and tone jamming signal generator, which generates a communication call having a center frequency capable of applying a jammer or disturbance signal from a tone signal generator 11, The tone signal is sent to the amplifier 12, amplified by a strong noise signal, and then applied to the barrel / pulse converter 14. The barrel / pulse converter 14 is composed of a switch, and performs a tone / pulse conversion function according to an operation of turning on / off the switch.

However, these jamming signal generators have a predetermined output power to transmit strong noise, so that the transceiver output uses a predetermined output power regardless of which modulation / demodulation system, spreader or bit energy rate is used. Therefore, there was a problem causing loss of energy.

FIG. 3 is an advanced jamming signal generator proposed to improve the problem of FIG. 2 and generates a tone signal from the tone signal generator 11 and applies it to the amplifier 12A whose gain is variable. Meanwhile, the modulation and demodulation method of the communication signal received through the antenna 16 and the modulation and demodulation method and bit energy processing unit 17 capable of processing the bit energy according thereto are connected to the gain control terminal of the variable amplifier 12A. The complex jamming signal transmitted to the antenna by adjusting the gain of the variable amplifier 12A to the value obtained by the modulation and demodulation method and the bit energy rate by analyzing the hardware and complex processing through the method and the bit energy processor 17. Make. This signal is applied to the tone / pulse converter 14. The tone / pulse conversion unit 14 is composed of a switch, and performs a tone / pulse conversion function in accordance with an operation of turning on / off the switch, thereby transmitting a tone jamming signal or a pulse jamming signal through the transmission antenna 15. It is configured to.

However, the jamming signal generator of such a configuration can adjust the output power by adjusting the gain of the amplifier to the value obtained by finding the modulation and demodulation method and the bit energy rate through the hardware-complicated processing. There was a problem such that it was not possible to adapt to the communication by changing the modulation and demodulation method.

Therefore, the present invention has been devised to solve the above problems, and the present invention is arbitrarily set according to the received power even when communicating using any modulator or spreader in applying a jamming signal to a link of a wireless communication system. It is an object of the present invention to provide an adaptive tone and pulse jamming signal generator for adaptively outputting a jamming signal having a JSR.

In order to achieve the above object, the present invention provides a reception power detecting means for measuring a communication signal power of a disturbing counterpart received through an antenna and calculating an average power thereof; Tone signal generating means for generating a jamming signal to be sent to the counterpart to be disturbed; Tone / pulse conversion means for converting the transmission jamming signal generated by the tone signal generation means into a tone or pulse form by a timer using a counter; Signal ratio detection means for detecting a signal ratio of the received signal to the transmission jamming signal from the average power of the disturbing counterpart detected by the received power detection means; Adaptive noise generating means for synthesizing the signal ratio detected by the signal ratio detecting means and the transmission jamming signal generated by the tone signal to produce noise having the same power as the signal received by the antenna; Adaptive tone and pulse jamming signal comprising an adaptive jamming signal generating means for amplifying the adaptive noise generated by the adaptive noise generating means to a gain according to an arbitrarily set JSR to generate a transmission jamming signal adapted to the power of the received signal. Provide a generator.

1 is a conceptual diagram illustrating a general wireless communication system and a jammer system;

2 is a block diagram illustrating an example of a conventional jamming signal generator;

4 is a block diagram showing another example of a conventional jamming signal generator;

4 is a block diagram illustrating an adaptive pulse and tone jamming signal generator according to an embodiment of the present invention;

5 is a detailed view for explaining a redundant structure of the power measurement and detection means of FIG.

** Description of symbols for the main parts of the drawing **

41: tone signal generator 42: receiving antenna

43: reception power measurement and calculation unit 44: transmission noise power measurement and calculation unit

45: calculator 46: pulse / tone conversion unit

47: timer unit 48: signal ratio detection unit

49: multiplier 50: amplifier

51: transmit antenna

Hereinafter, the configuration of the adaptive tone and pulse jamming signal generator according to each embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a block diagram showing the configuration of the adaptive tone and pulse jamming signal generator according to the present invention, the present invention is to measure the power of the communication signal received through the antenna 42, as shown in FIG. Received power detection (measurement and calculation) means 43 for calculating an average power; Tone signal generating means (41) for generating a transmission jamming signal; Transmission noise power detection (measurement and calculation) means (44) for measuring the noise power of the transmission jamming signal generated by the tone signal generation means and calculating the average power thereof; Tone / pulse conversion means (46) for converting the two average power ratios into a tone or pulse form by a timer using a counter; A signal ratio for calculating the power ratio of the signal power and the transmission noise power from the average power of the detected received signal or the two detected average powers, and detecting the signal ratio of the received signal and the transmitted jamming signal from the calculated result. Detection means (45, 48); The transmission jamming signal generated by the detected signal ratio and the tone signal is synthesized and amplified by a gain according to the JSR of the same power as the signal received by the antenna to generate a transmission jamming signal adapted to the power of the reception signal. It comprises a adaptive jamming signal generating means (50).

The signal ratio detecting means may be composed of a divider 45 which can obtain a power ratio with two average power signals, and a square root calculator 48 which converts the power ratio into a signal ratio.

The adaptive jamming signal generating means may generate a transmission jamming signal adapted to the power of the reception signal by multiplying the transmission jamming signal generated by the tone signal by the generated adaptive noise.

In particular, in the present invention, the tone jamming signal generator and the pulse jamming signal generator are classified according to the switch terminal setting state of the tone / pulse conversion unit operating according to the control signal of the timer unit, and in the adaptive jamming signal generator as shown in FIG. An adaptive tone jamming signal generator is provided which outputs a tone jamming signal at the output stage when the tone / pulse conversion section is kept on. The output stage when the tone / pulse conversion section switches the on / off state in a repetitive manner An adaptive pulse jamming signal generator may be configured to output a pulse jamming signal at.

Fig. 5 is a detailed circuit diagram of the detecting means, which is duplicated by a plurality of power measuring and calculating units 43a and 43b to always detect a stable average power, and calculates an average value from the received power measurement. The prediction unit 43c is provided.

In other words, the reception power detecting means 43 receives a counterpart communication signal including the transmission power transmitted by the Korean side for the purpose of disturbance through an antenna during jamming on period, and calculates an average power; The calculation unit 43a and the first power measurement and calculation unit 43a are operated in a complementary relationship, and the second power measurement and calculation unit 43b operates during the jamming off period, so that only the communication signal of the pure counterpart And a second power measurement and calculation unit 43b for receiving the outgoing power transmitted for the purpose of disturbance and calculating the average power.

In this case, the first and second power measurement and calculation units 43a and 43b may include a jamming drive signal Jam on that passes through the inverter 43d and a jamming drive signal Jam that does not pass through the inverter, for redundancy of the configuration. It is preferable to configure so as to alternate with each other by).

Although not shown in the drawing, the transmission noise power detecting means is duplexed like the reception power detecting means of FIG. 5 so that the noise power of the transmission jamming signal generated by the tone signal generator 41 can always be detected in a stable state. Can be configured.

That is, the transmission noise power detecting means 44 divides the tone signal output from the tone signal generating part 41 by the jamming on / off period in the same way as the receiving power detecting means 43, and averages the noise power. And a second power measurement and calculation unit.

Referring to the operation of the present invention and the resulting effects that are configured as described above are as follows.

First, after arbitrarily setting the required JSR, the receiving power detecting means 43 firstly measures and calculates the communication signal of the wireless communication system received through the antenna so as to provide a stable average power at all times. 43a) and the power of the signal received through any one of the second power measurement and calculation unit 43b, and using the mean power estimator 43c, the average of the received signal power (A) Will be obtained.

That is, among the duplicated first and second power measuring and calculating units 43a and 43b, the first power measuring and calculating unit 43a transmits power transmitted by the Korean party for disturbance purposes during the jamming on period. Receiving the other party's communication signal, the remaining second power measurement and calculation unit 43b operates the jamming off time to receive only the other party's communication signal (except the transmission power we sent for disturbance purposes) to obtain the average power. By calculating this, the communication signal frequency power of the other party can be accurately calculated.

On the other hand, the first power measurement and calculation unit (not shown) and the second power measurement and calculation unit (not shown) of the tone jamming signal generated by the tone signal generation unit 41 to the transmission noise power detection means 44 The power of the transmission jamming signal is measured by using any one of them, and the average power B of the transmission noise power is obtained by using an average power predictor (not shown).

In addition, the divider 45 calculates the power ratio A / B of the signal power A and the transmission noise power B using the two average powers, and provides the calculated power ratio A / B to the barrel / pulse converter 46. . In response, the tone / pulse converter 46 generates a tone jamming signal or a pulse jamming signal in accordance with the switching operation controlled by the timer 47 using a counter, and provides the tone jamming signal or the pulse jamming signal to the signal ratio detecting means (Fig. 48). In the signal ratio detecting means (square root calculator: 48), the signal ratio for the received signal and the transmitted jamming signal is calculated from the power ratio of the jamming signal in the pulse form (or the jamming signal in the tone form) and the received signal. ).

The detected signal ratio is again combined with the transmission jamming signal by the adaptive noise generating means (multiplier 49 in the drawing), thereby making noise of the same low power as the communication signal received by the reception antenna.

Accordingly, the adaptive jamming signal generating means 49 (amplifier in the figure) amplifies the generated adaptive noise by a gain according to a randomly set JSR, so that the transmission jamming signal is always adapted to the power of the received signal so that the transmission antenna 50 Can be sent through.

For example, assuming that the other party's communication frequency power is 3 [w] and that the JSR of the present invention is 10 times, the first power measurement and calculation unit 43a determines that the disturbance frequency power (JSR) 33 [w] including the multiplied counterpart communication frequency power) is detected (the second power measurement and calculation unit is not operated), and the second power measurement and calculation unit 43b includes the disturbing frequency power in the jamming off period. Only 3 [w] is detected.

The present invention is to determine 3 [w] detected by the second power measurement and calculation unit 43b as the communication frequency power of the actual counterpart during this jamming off period. Therefore, our proposal executes the jamming function because this calculated 3 [w] is multiplied by JSR and 30 [W] is sent out as the disturbing frequency power.

Meanwhile, in another embodiment of the present invention, when the average power of the received signal detected by the reception power detecting means is set to a predetermined reference power (for example, the output of the transmission noise power detecting means is set to an arbitrary value ("1")). By comparing with), the power ratio is detected, and the signal ratio of the received signal to the transmitted jamming signal is detected from the power ratio, whereby a transmission jamming signal adapted to the received signal can be transmitted.

Therefore, the present invention reduces the output power of the jamming signal generator according to the low power of the transceiver to communicate with, and the output power is increased according to the power increase, so that the effective jamming signal can be transmitted.

That is, the present invention detects through the second power measurement and calculation unit 43b when the counterpart communication frequency power is changed to another frequency power, and applies the detected value to the system again, which is not disclosed in the conventional jammer system. It is also a very excellent design.

Therefore, according to the present invention, the tone jamming signal and the pulse jamming signal can be easily generated according to the communication signal strength of the wireless communication system, thereby minimizing the loss of the jamming signal transmission power, and in any system using any demodulation or spreader. Since all can be applied, there is an advantage that can be applied to all systems for jamming the wireless communication system.

Claims (4)

Receiving power detecting means for measuring a communication signal power of a disturbing counterpart received through an antenna and calculating an average power thereof; Tone signal generating means for generating a jamming signal to be sent by the counterpart to be disturbed; Tone / pulse conversion means for converting the transmission jamming signal generated by the tone signal generation means into a tone or pulse form by a timer using a counter; Signal ratio detection means for detecting a signal ratio of the received signal to the transmission jamming signal from the average power of the disturbing counterpart detected by the received power detection means; Adaptive noise generating means for synthesizing the signal ratio detected by the signal ratio detecting means and the transmission jamming signal generated by the tone signal to produce noise having the same power as the signal received by the antenna; And an adaptive jamming signal generating means for amplifying the adaptive noise generated by the adaptive noise generating means to a gain according to an arbitrarily set JSR to generate a transmission jamming signal adapted to the power of the received signal. And pulse jamming signal generator. The apparatus of claim 1, wherein the receiving power detecting unit comprises: a first power measuring and calculating unit configured to receive a counterpart communication signal including transmission power transmitted for disturbance through an antenna during a jamming on period and calculate an average power; And a second power measurement and calculation unit operating in a jamming-off period in a complementary relationship with the first power measurement and calculation unit to receive only a communication signal of a procedure counterpart to calculate an average power. Pulse jamming signal generator. 2. The apparatus of claim 1, further comprising transmission noise power detection means for measuring noise power of a transmission jamming signal generated by a tone signal and calculating an average power between the output terminal of the tone / pulse conversion means and the antenna. Adaptive tone and pulse jamming signal generator. 4. The apparatus of claim 3, wherein the transmission noise power detecting means comprises: a first power measurement and calculation unit configured to receive the tone signal output from the tone signal generation means during the jamming on period and calculate an average power; And a second power measurement and calculation unit operating in a jamming off period in complementary relation with a negative to calculate an average power of the tone signal output from the tone signal generating means.