CN203630356U

CN203630356U - Frequency hopping type electronic countermeasure equipment

Info

Publication number: CN203630356U
Application number: CN201320797216.6U
Authority: CN
Inventors: 林新明
Original assignee: Hangzhou Bada Microwave Science & Technology Co Ltd
Current assignee: Hangzhou Bada Microwave Science & Technology Co Ltd
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2014-06-04
Anticipated expiration: 2023-12-05

Abstract

The utility model discloses frequency hopping type electronic countermeasure equipment comprising a broadband voltage-controlled oscillator (VCO), a broadband power amplifier, a broadband antenna, a VCO power supply and a control system; the control system comprises a sawtooth wave generator circuit for VCO tuning and a VCO power supply circuit; the sawtooth wave generator circuit comprises an LM555 sawtooth wave generation circuit, a primary amplification circuit and a secondary amplification circuit; a sawtooth wave output end of the sawtooth wave generator circuit is connected with a tuning input end of the VCO; according to the requirements of the VCO power supply circuit, when the frequency of the VCO approaches to a self radar or communication frequency range, the power of the VCO is cut off, and the VCO oscillation is stopped, so no interference if caused to the self radar and communication. The electromagnetic frequency spectrum emitted by the electronic countermeasure equipment can affect enemy command, control, communication, computer, information, monitoring, reconnoitre (C4ISR) system and weapon guidance system, and simultaneously self radar and communication are not affected.

Description

A kind of frequency hopping countermeasures set

Technical field

The utility model has related to a kind of frequency hopping countermeasures set.

Background technology

Modern electronic warfare to as if disturb or destroy enemy's commander, control communication, computing machine, information, monitors, investigation (is C ⁴iSR) system and weapon direction system, and modern C ⁴iSR system and weapon direction system depend on electromagnetic spectrum widely.Therefore, can develop a kind of frequency hopping countermeasures set, the electromagnetic spectrum of this countermeasures set transmitting can disturb enemy's C ⁴iSR system and weapon direction system, and can not disturb one's own side's radar and communication system.

Summary of the invention

The utility model, for existing countermeasures set, in the time disturbing enemy, to the radar of oneself and the also noisy shortcoming of communicating by letter, provides a kind of frequency hopping countermeasures set.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of frequency hopping countermeasures set, comprise that wideband voltage controlled oscillator is VCO, broadband power amplifier, broad-band antenna, VCO power supply and composition of the control system, control system comprises sweep-generation circuit and the VCO power-supplying circuit of the tuning use of VCO, VCO power-supplying circuit comprises 4 forward voltage comparers in parallel, 4 forward voltage comparer output V1 in parallel, V2, V3 and V4, V1 connects T1 through resistance R 10, V2 connects T5 through resistance R 14, V3 connects T3 through resistance R 17, V4 connects T6 through resistance R 20, the e end of T1 connects the c end of T2, the e end of T2 connects the c end of T3, the e end of T3 connects the c end of T4, the c end of T1 connects field effect transistor Q1, field effect transistor Q1 entered R8 and connected T0, T0 output terminal output VCO, sweep-generation circuit connects VCO power supply, sweep-generation circuit comprises LM555 saw-tooth wave generating circuit, one-level amplifying circuit and second amplifying circuit, the sawtooth wave output terminal of sweep-generation circuit connects the tuning input end of VCO.

In LM555 saw-tooth wave generating circuit, comprise LM555, 5 pin of LM555 connect capacitor C 2, 6 pin and 2 pin interconnect and series capacitance C3, one end of C2 and C3 interconnects series capacitance C1, the other end of C1 connects respectively the input end of potentiometer R22 and second amplifying circuit, the 3 pin output synchronizing pulses of LM555, 7 pin of LM555 meet R33, R32 connects the positive input of one-level amplifying circuit, the earth terminal of one-level amplifying circuit connects potentiometer R34, the output terminal of one-level amplifying circuit is connected with the positive input of second amplifying circuit, the sawtooth wave output terminal of second amplifying circuit connects the tuning end of VCO.In LM555 saw-tooth wave generating circuit, obtain sawtooth wave, sawtooth wave process and amplifying circuit and second amplifying circuit, the pulse producing is the most at last input in power-supplying circuit.LM555 produces sawtooth signal, and A1 provides gain and isolation to this signal waveform, and A2 follows the tracks of this signal waveform, obtain linear sawtooth wave output, potentiometer RP1 is for regulating the linearity of sawtooth wave, and RP2 is for regulating the starting point of tracking, and RP3 is for regulating the width of tracking.

The utility model, owing to having adopted above technical scheme, has significant technique effect:

The electromagnetic spectrum of countermeasures set transmitting of the present utility model can disturb enemy's C ⁴iSR system and weapon direction system obtain linear sawtooth wave in sweep-generation circuit, are input in VCO tuned circuit, for it.

Accompanying drawing explanation

Fig. 1 is VCO power-supplying circuit Part I schematic diagram of the present utility model;

Fig. 2 is VCO power-supplying circuit Part II schematic diagram of the present utility model;

Fig. 3 is the schematic diagram of sweep-generation circuit;

Fig. 4 is the graph of a relation of VCO tuning voltage and temporal frequency;

Fig. 5 is that VCO power supply adds electrical waveform;

Fig. 6 is the corresponding relation figure of Fig. 4 and Fig. 5;

Fig. 7 is system construction drawing of the present utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.

Embodiment 1

In LM555 saw-tooth wave generating circuit, comprise LM555, 5 pin of LM555 connect capacitor C 2, 6 pin and 2 pin interconnect and series capacitance C3, one end of C2 and C3 interconnects series capacitance C1, the other end of C1 connects respectively the input end of potentiometer R22 and second amplifying circuit, the 3 pin output synchronizing pulses of LM555, 7 pin of LM555 meet R33, R32 connects the positive input of one-level amplifying circuit, the earth terminal of one-level amplifying circuit connects potentiometer R34, the output terminal of one-level amplifying circuit is connected with the positive input of second amplifying circuit, the sawtooth wave output terminal of second amplifying circuit connects the tuning end of VCO.LM555 produces sawtooth signal, and A1 provides gain and isolation to this signal waveform, and A2 follows the tracks of this signal waveform, obtain linear sawtooth wave output, potentiometer RP1 is for regulating the linearity of sawtooth wave, and RP2 is for regulating the starting point of tracking, and RP3 is for regulating the width of tracking.

The utility model principle of work: if when VCO oscillation frequency enters the communication of party B and radar frequency, turn off immediately VCO power supply, make VCO failure of oscillation, the communication and the radar that prevent party B produce interference, in the time that frequency exceedes the communication of party B and radar frequency, VCO power supply powers up immediately, transmitting undesired signal.Within the cycle of 1ms, VCO power supply wave shape as shown in Figure 5, adds the gap of electric pulse at VCO power supply, VCO failure of oscillation, and the frequency while making VCO failure of oscillation is just in communications band and the radar frequency band of party B.Like this, the electromagnetic wave of this countermeasures set transmitting only disturbs enemy's C ⁴iSR system and weapon direction system, and do not disturb radar and the communication system of party B.

The principle of work of sweep-generation circuit: produce VO～VT, the sawtooth wave linear ramp that the cycle is 1ms, as the tuning voltage of broadband VCO.

With reference to accompanying drawing 1 and Fig. 2, the principle of work of VCO power-supplying circuit:

When the power supply of VCO closes, VCO tuning voltage=VO, can obtain V1=V2=V3=V4=0V, T1 cut-off, and T2 conducting, T3 cut-off, T4 conducting, A point is positioned at noble potential, T0 conducting, VCO power supply powers up, as mono-section of o～a in Fig. 5;

When VCO tuning voltage increases to V1 high level, V2=V3=V4=0V, T1 conducting, T2 conducting, T3 cut-off, T4 conducting, A point is positioned at electronegative potential, T0 cut-off, VCO power supply does not power up, as mono-section of a～b in Fig. 5;

When VCO tuning voltage increases to V1=V2 high level again, V3=V4=0V, T1 conducting, T2 cut-off, T3 cut-off, T4 conducting, A point is positioned at noble potential, T0 conducting, VCO power supply powers up, as mono-section of b～c in Fig. 5;

When VCO tuning voltage increases to V1=V2=V3 high level again, V4=0V, T1 conducting, T2 cut-off, T3 conducting, T4 conducting, A point is positioned at electronegative potential, T0 cut-off, VCO power supply does not power up, as mono-section of c～d in Fig. 5;

In the time that VCO tuning voltage increases again, V1=V2=V3=V4 noble potential, T1 conducting, T2 cut-off, T3 conducting, T4 cut-off, A point noble potential, T0 conducting, VCO power supply powers up, as mono-section of d～e in Fig. 5.

In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.

Claims

1. a frequency hopping countermeasures set, it is characterized in that: comprise that wideband voltage controlled oscillator is VCO, broadband power amplifier, broad-band antenna, VCO power supply and composition of the control system, control system comprises sweep-generation circuit and the VCO power-supplying circuit of the tuning use of VCO, VCO power-supplying circuit comprises 4 forward voltage comparers in parallel, 4 forward voltage comparer output V1 in parallel, V2, V3 and V4, V1 connects T1 through resistance R 10, V2 connects T5 through resistance R 14, V3 connects T3 through resistance R 17, V4 connects T6 through resistance R 20, the e end of T1 connects the c end of T2, the e end of T2 connects the c end of T3, the e end of T3 connects the c end of T4, the c end of T1 connects field effect transistor Q1, field effect transistor Q1 entered R8 and connected T0, T0 output terminal output VCO, sweep-generation circuit connects VCO power supply, sweep-generation circuit comprises LM555 saw-tooth wave generating circuit, one-level amplifying circuit and second amplifying circuit, the sawtooth wave output terminal of sweep-generation circuit connects the tuning input end of VCO.

2. a kind of frequency hopping countermeasures set according to claim 1, it is characterized in that: in LM555 saw-tooth wave generating circuit, comprise LM555, 5 pin of LM555 connect capacitor C 2, 6 pin and 2 pin interconnect and series capacitance C3, one end of C2 and C3 interconnects series capacitance C1, the other end of C1 connects respectively the input end of potentiometer R22 and second amplifying circuit, the 3 pin output synchronizing pulses of LM555, 7 pin of LM555 meet R33, R32 connects the positive input of one-level amplifying circuit, the earth terminal of one-level amplifying circuit connects potentiometer R34, the output terminal of one-level amplifying circuit is connected with the positive input of second amplifying circuit, the sawtooth wave output terminal of second amplifying circuit connects the tuning end of VCO.