Device for blocking radio detonators

 

(57) Abstract:

The invention relates to deal with mines and other explosive objects with the radio detonators and is designed for protection against radio-controlled explosive devices. The technical result is an increase in reliability of protection against the unauthorized transmission of information over the air in a wide range of previously unknown radio frequencies without increasing the integral of the output power devices, energy consumption, size and weight and the possibility to quickly adapt to the changing RF environment without changing schemes and designs. The device contains n shapers frequency broadband amplifier broadband antenna system, the switch, the n signal inputs of which are connected to the outputs of the shapers of frequencies, and the output connected to the input broadband power amplifier, generator, pseudo-random sequence of pulses, is connected to the control input of the switch, and controlled impedance device connected between the broadband amplifier and broadband antenna system, and regulator characteristics connected to opravlyaushi is. In addition, each of the n shapers frequency operates in overlapping adjacent frequency bands and made in the form of serially connected driver nonlinear variable voltage and generator voltage-controlled. 1 C.p. f-crystals, 2 Il.

The invention relates to deal with mines and other explosive objects with the radio detonators and is designed for protection against radio-controlled explosive devices by blocking the unauthorized transmission of information management radio detonators radio, and can also be used to protect against the unauthorized transmission of any information over the air in a wide range of previously unknown radio frequencies.

Known protection devices that can be used to prevent operation of radio detonators, for example [1], comprising sequentially the United shaper frequency, wide-band amplifier and broadband antenna system that creates a wide band of frequencies defensive obstacle in the form of amplified white noise. In this and similar devices power radiated interference on each specific suppressed frequency is small, POSCO is suppressed only very thin unauthorized transmitters of information.

A device for blocking radio detonators containing multiple (n) of identical modules, each of which includes serially connected driver frequencies, the amplifier and the antenna, in this case, all modules simultaneously operate in non-overlapping sub-bands of the protected range of frequencies [2] (the prototype). This known device makes it possible to radiate high power in each sub-band of frequencies sufficient for protection against radio-controlled explosive devices. One of the drawbacks of such a device to lock the radio detonators is increased n times the integral radiation power, where n is the number of modules used. Increase the integral power of the transmitter interference is undesirable, both because of the significant increase in power consumption, size and weight, and mainly because of the complexity of permissible exposure to radiation such devices on the body operators in accordance with GOST 12.1.006 - 84 and Sanitary rules and norms SanPiN 2.2.4/2.1.8.055-96.

Another disadvantage of this device is that in parts of the frequency range between sub-bands of radiation modules power of the interference signals is only 10. .. 20% from Moho of the known device is that it is impossible without changing the schema and design to quickly adapt to changing RF environments. The fact that in each period of time operational information in one, in another frequency range increases the probability of use for the unauthorized transmission of information over the air such common facilities as cordless phones, transmitters for radio-controlled models and toys, paging transmitters of communication and so on, the list of which and that are used in radio frequency continuously changes.

The present invention is to increase the reliability of protection against the unauthorized transmission of information management radio detonators on the air in a wide range of previously unknown radio frequencies without increasing the integral of the output power devices, energy consumption, size and weight, as well as providing the possibility to adapt it to changing RF environments without changes to the schema and design.

The problem is solved in that the device containing n shapers frequency, wide-band amplifier and broadband antenna system, inputs of the switch, the n signal inputs of which are connected to the outputs of the n shapers frequency, and the output connected to connected to the control input of the switch, and controlled impedance device connected between the broadband amplifier and broadband antenna system and control characteristics, connected to the control inputs of the broadband power amplifier, a matching device and n shapers frequencies.

In addition, each of the n shapers frequency operates in overlapping adjacent frequency bands and made in the form of serially connected driver nonlinear variable voltage and generator voltage-controlled.

The device uses a known method of frequency sweep, allowing it to radiate high power at each frequency sequentially in time. At a certain frequency f(t) is generated and radiated by the desired signal power required for reliable protection, and the frequency for a period of time depending on the number n of generators of frequencies and time T scan one frequency driver frequency varies across the range of protected frequencies, "skimming" all values from the lower to the upper. A new set of features it provides: first, a combination characteristic of the method of the frequency sweep of the high level of m is to the exercise of all types of modulation, because of the random nature of the switching shapers frequency switch range the output signal is similar to the "white" noise in the protected range of frequencies, and secondly, the possibility of single module build devices that can reduce its size, weight and power consumption and increase the integrated power device to achieve the desired reliability, security, and thirdly, the possibility to adapt the output characteristics of the device to the changing RF environment without changing the circuitry and design, increasing suppression in those areas of the range, where the likelihood of unauthorized transmission of information in a given period of time operational information is especially great. This is achieved by superposition of the spectra of adjacent formers frequencies within the specified areas of the frequency range, and a slowdown in the rate of change of frequency within these areas, as well as the job required of non-uniformity of the gain of the broadband amplifier and the desired non-uniformity of the amplitude-frequency characteristics of the broadband antenna system that provides simultaneous operation of forming a nonlinear variable voltage, the use of aliasing slow speed and correction of non-uniformity of the gain of the broadband amplifier and amplitude-frequency characteristics of the broadband antenna system allows you to zoom in specified range sections, the effectiveness of suppression 15 ... 18 dB, as it is experimentally it was found that while individually each of these measures is winning no more than 2-3 dB.

In the drawings shown: in Fig. 1 - structural diagram of the described device of Fig. 2 - diagram of the sweep frequency over time at the output of the switch.

The device contains n shapers 1 frequency (1-a, 1-b, ... 1-n), each of which operates in overlapping adjacent frequency bands and made in the form of serially connected driver 2 nonlinear variable voltage (2-a, 2-b, 2 ... n) and generator 3 is controlled by a voltage (3-a, 3-b, 3 ... n). The outputs of all n shapers frequency is connected to the n signal inputs of the switch 4, the output of which, in turn, is connected to the input of a broadband amplifier 5 power connected via controlled impedance device 6 to the broadband antenna system 7.

To the control inputs of the broadband amplifier 5 powerful regulator 8 characteristics and to the control input of switch 4 is connected to the generator 9 pseudo-random sequence of pulses.

The operation of the claimed device can be carried out as follows.

The entire range of the protected frequency from the lower frequency fnto the upper frequency findivided into n sub-bands (fafb,..fn), the number of which is equal to the number of formers f frequencies. The sub-bands partially overlap, as shown in the diagram showing the process of sweep frequency over time at the output of the switch 4. For clarity, the sequence of sub-bands shown conditional.

Each of the n generator 3 driven by the voltage, generates a signal whose frequency f is continuously changing over time T according to the law, the designated driver 2 nonlinear variable voltage under the action of the regulator 8 characteristics. Generator 3a, for example, produces the scan frequency in the sub-band fathe generator 3b - subrange fbwhile on the site frequency fabover a period of time from to to tn every frequency value appears twice. The same thing can be said about the plots of frequency fcd...fn(n-1). Did the Chi within these areas, that is, the reduction of "blurring" the power of interference in time. A similar effect is achieved and the reduction rate of change of frequency within the specified areas.

Switch 4 sequentially in time connects each of the n generator 3 driven by a voltage, to the input of the broadband amplifier 5 power under the law determined by the generator 9 pseudo-random sequence of pulses. From the output of the amplifier 5 to the power of the amplified signal is input to the controlled impedance device 6, and with its output to the input of a broadband antenna system 7. The controller 8 characteristics determines the specified gain flatness broadband amplifier 5 power with higher gain in given areas of the protected range of frequencies and given the irregularity of amplitude-frequency characteristics of the broadband antenna system 7 using controlled impedance device 6.

Thus, the proposed device due to a new set of features provides the ability to quickly adapt to the changing RF environment without changing the circuitry and design, provides increased security against unauthorized re is astot without increasing the integral of the output power device, its power consumption, size and weight, and ensures compliance with sanitary norms of the effects of radiation on the body operators in accordance with GOST 12.1.006-84 and SanPiN 2.2.4/2.1.8.055-96.

Sources of information

1. Ivliev S., Maistrenko N. and other Search and neutralization of explosive devices. - M.: Foundation For economic security, 1996.

2. Petrenko E. G., tench, A. A., Jakubczak A. Y. Device for blocking radio detonators, patent N 2100752 from 22.11.96, MKI F 41 H 11/12, publ. BI N 36, 11 o'clock, 1997, S. 391.

1. Device for blocking radio detonators containing n shapers frequency, wide-band amplifier and broadband antenna system, characterized in that it additionally introduced switch n signal inputs of which are connected to the outputs of the shapers of frequencies, and the output connected to the input broadband power amplifier, generator, pseudo-random sequence of pulses, is connected to the control input of the switch, and controlled impedance device connected between the broadband amplifier and broadband antenna system, and control characteristics, connected to the control inputs of the broadband amplifier monastery of shapers frequencies are designed to work in overlapping adjacent frequency bands and consists of serially connected driver nonlinear variable voltage and generator, voltage controlled.

 

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Mine trawl // 2081385
The invention relates to engineering of weapons and can be used for exploration mine barriers and making them passes

FIELD: means for making passages in mine fields, applicable for sweeping of antipersonnel and antitank antiboard mines with target strain gauge-type cells.

SUBSTANCE: the drag of the mine-sweeping device is made in the form of an elongated plate, whose width equals 40 to 80 of the thickness of the wire tension member of the target strain gauge-type cell of the mine. The plate thickness and length equal respectively 0.1 to 0.3 and 2 to 5 its width, and the bulges are positioned on both sides of the plate winder part. Besides, the bulges are made mainly in the form of counter-sunk heads of screws with a height not exceeding 2.0 to 3.0 of the maximum thickness of the wire tension member, and the drag head section is made sharpened.

EFFECT: simplified construction of the device, provided manufacture of it in the field conditions, when a critical situation arises.

3 cl, 2 dwg

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