RU2760329C1 - Method for joint operation of on-board radio location stations and active interference stations during group actions of fighter planes - Google Patents

Abstract

FIELD: radio location.

SUBSTANCE: invention relates to the field of radio electronic warfare and can be used to increase the effectiveness of group actions of fighter planes. In the claimed method, pulse-Doppler on-board radio location stations of a group of two fighter planes are combined into a system with information exchange channels, a leader fighter plane is determined. For each on-board radio location station, the ranges to the enemy plane are measured and transmitted via the information exchange channel to the on-board computing system of the leader fighter plane. Paired fighter planes are equipped with active interference stations. In the on-board computing system of the leader fighter, based on the comparison of the measured ranges D₁ and D₂, respectively, between the first fighter plane and the enemy plane and the second fighter and the enemy plane in the case if D₁<D₂, the first plane whereon the on-board radio location station is operating for emission with a deactivated active interference station is designated as a striking fighter plane, and the second aircraft whereon the active interference station is activated and the airborne radio location station is deactivated for emission is designated as a cover fighter plane. Otherwise, at D₁>D_2, the second fighter plane is designated as a strike plane with an on-board radio location station operating for emission and a deactivated active interference station, and the first fighter plane is designated as a cover aircraft with an activated active interference station and an on-board radio location station deactivated for emission. The cover fighter therein maintains the "front line" form of the battle order with an interval L between the fighter planes of the pair.

EFFECT: increase in the effectiveness of group actions of fighter planes due to the setting of active interference and maintaining of the required parameters of the battle order.

1 cl, 4 dwg

Description

The invention relates to the field of electronic warfare and can be used to improve the efficiency of group actions of fighters.

There is a known method of functioning of a pulse-Doppler airborne radar station (BRLS), which consists in the formation of a high-frequency sequence of sounding pulses, their amplification in power, radiation into space, reception, amplification, conversion of reflected signals to intermediate frequencies, their selection by range and Doppler frequency, conversion signals in digital form with their subsequent spectral analysis [1].

The disadvantage of this method is the impossibility of jamming the onboard radar stations of enemy aircraft due to the absence of active jamming on the fighter station.

N - общее количество истребителей в составе группы, оснащенные импульсно-доплеровскими БРЛС) импульсно-доплеровской БРЛС каждого i-го истребителя группы измеряются дальности межу i-м истребителем из состава группы и самолетом противника, которые по каналу обмена информации между всеми истребителями группы передаются на один истребитель-лидер. [2].There is a known method of functioning of the system of pulse-Doppler radars during group actions of fighters, which consists in the fact that all pulse-Doppler radars of N fighters of the group are combined into a single radar system with channels for mutual exchange of information, in each i-th (where

N is the total number of fighters in the group, equipped with pulse-Doppler radar) of the pulse-Doppler radar of each i-th fighter of the group, the distances between the i-th fighter from the group and the enemy aircraft are measured, which are transmitted to one fighter leader. [2].

The disadvantage of this method of functioning of the system of pulse-Doppler airborne radars during group actions of fighters is the inability to jam enemy airborne radars with its help, which leads to a decrease in the effectiveness of group actions of fighters.

Indeed, one of the possible ways to increase the effectiveness of group actions of fighters is the organization of radio countermeasures to the radar of enemy fighters by means of active jamming. However, during group actions of fighters when jamming enemy fighters onboard radar stations, unintentional interference occurs at the input of radar receivers of other "own" fighters in the group, which leads to a decrease in the effectiveness of their group actions, which must be taken into account when choosing the parameters of the battle formation and assigning tasks , solved by fighters in the group.

The purpose of the invention is to improve the efficiency of group actions of fighters by setting active jamming and maintaining the required parameters of the battle order.

This goal is achieved by the method of joint operation of the radar and active jamming stations (SAP) during group actions of fighters, which consists in the fact that the pulse-Doppler radars of a group of two fighters are combined into a system with information exchange channels, a fighter-leader is determined, in each _On -board radars measure the ranges D 1 and D ₂ to the enemy aircraft, the measured range in the on-board radar of the second fighter is transmitted via the information exchange channel to the on-board computing system of the leader fighter, additionally the fighters of the pair are equipped with an SAP, in the on-board computing system of the leader fighter based on the comparison of the measured ranges D ₁ and D _2, respectively, between the first fighter and the enemy aircraft, and the second fighter and the enemy aircraft, if D ₁ <D _{2, the} first aircraft is assigned as a strike fighter, on which the radar operates on radiation with the SAP off, and the cover fighter - the second aircraft , on which SAP is turned on and off on radar radiation, otherwise, when D ₁ > D ₂ , the second fighter is assigned as a strike aircraft with the radar operating on radiation and the SAP off, and the first fighter - by the cover plane with the SAP on and off for the radar radiation, while the cover fighter maintains its shape battle order "front" with an interval L between fighters of a pair, defined as

where

D _on - potential range of weapon use in the absence of interference;

R _sap is the radiated power of the SAP of the covering fighter;

G _bl.sap - the directional action factor of the side lobes of the SAP antenna directional pattern;

Δf _PRM is the bandwidth of the strike fighter's radar receiver;

- коэффициент направленного действия боковых лепестков диаграммы направленности антенны БРЛС ударного истребителя;

- coefficient of directional action of the side lobes of the directional pattern of the radar antenna of the strike fighter;

Δf _p is the width of the interference spectrum emitted by the SAP of the cover fighter;

K _p1 - coefficient of suppression of the radar receiver of the strike fighter;

P _brls1 - average radiated power of a strike fighter's radar;

- коэффициент направленного действия по основному лепестку диаграммы направленности антенны БРЛС ударного истребителя;

- the directivity factor for the main lobe of the directional pattern of the radar antenna of the strike fighter;

σ _c - effective scattering surface of the enemy aircraft.

The need for the fighter to maintain cover of the "front" battle formation with an interval L between the fighters of the pair is due to the fact that, on the one hand, the effectiveness of the cover of a strike fighter by a cover fighter with a radiation-powered SAP is the higher the closer it is to the strike fighter. In this case, they will be located in the main lobe of the enemy radar antenna radiation pattern, which leads to the fact that the interference emitted by the SAP of the cover fighter will effectively affect the main lobe of the enemy radar antenna radiation pattern, thereby reducing the detection range of the group fighter.

On the other hand, when a cover fighter approaches a strike fighter with its SAP operating on radiation, the power of unintentional interference, acting along the side lobes of the radar antenna of the strike fighter's radar, increases, which leads to a decrease in the detection range of its radar.

Thus, to increase the effectiveness of suppressing enemy radar, the cover fighter should be brought closer to the strike fighter, thereby, in advance, reducing the detection range of its radar due to an increase in the power of unintentional interference until the condition is fulfilled when the detection range of the radar of an enemy strike fighter will be equal to the range of its use. weapons.

Based on this, expression (1) is due to the following.

In the general case, the range D of the _{radar for} detecting the on-board radar of a strike fighter in conditions of interference from the side lobes of the antenna radiation pattern can be calculated by the formula:

where, except for those previously accepted, R _p is the range to the jammer.

G_бл.сап,

характеризуют взаимную ориентацию диаграмм направленности соответственно БРЛС ударного истребителя и САП истребителя прикрытия. С целью сохранения возможностей БРЛС ударного истребителя по применению оружия необходимо при расчетах в выражении (2) дальность D_брлс заменить на дальность D_по. В результате выражение (2) преобразуется в выражение (1).As a jammer, in this case, a cover fighter is considered, with a SAP operating on radiation. Therefore, it is necessary to replace in expression (2) the value of R _p by the distance L between the strike fighter and the cover fighter. The quantities

G _bl.sap ,

characterize the mutual orientation of the radiation patterns, respectively, of the radar of the strike fighter and the SAP of the cover fighter. In order to preserve the capabilities of the radar of a strike fighter in the use of weapons, it is necessary to _{replace the range D of the radar} with a range of D _on in the calculations in expression (2). As a result, expression (2) is converted to expression (1).

New features with significant differences are.

1. Fighters of the group with their radars are equipped with active jamming stations.

2. Depending on the ratio of the detection ranges of the enemy aircraft group by fighters, a strike fighter is assigned with its on-board radar operating on radiation and the SAP off, and a cover fighter, with the on-board radar switched on and off.

3. The cover fighter maintains the "front" battle formation with the interval between the pair fighters, calculated in accordance with expression (1).

These features have significant differences, since they were not found in the known methods.

The use of new features, in conjunction with the known ones, will increase the effectiveness of group actions of fighters by setting up active jamming and maintaining the required parameters of the battle order.

The method of joint operation of radar and SAP in group actions of fighters is implemented as follows.

FIG. 1 on the example of a group of two fighters "A" and "B" with their radar and SAP, a tactical situation corresponding to their counteraction to the enemy aircraft "C" is given, for a situation when the distance between the fighter "A" and the enemy aircraft "C" exceeds the distance between fighter "B" and enemy aircraft "C" (D ₁ > D ₂ ), in Fig. 2 shows a block diagram of the joint operation of the radar and the SAP for the tactical situation shown in FIG. 1. In FIG. 3, using the example of a group of two fighters "A" and "B" with their radar and SAP, a tactical situation is shown corresponding to their counteraction to the enemy aircraft "C", for a situation when the distance between fighter "A" and the enemy aircraft "C" is less than the distance between fighter "B" and enemy aircraft "C" (D ₁ <D ₂ ), in Fig. 4 shows a block diagram of the joint operation of the radar and the SAP for the tactical situation shown in FIG. 3.

Let fighter "A" be the leader fighter. Then, in each radar, the ranges D ₁ and D ₂ to the enemy aircraft "S" are measured. The measured range D ₂ in the radar 2 (Fig. 1, Fig. 3) of the fighter "B" is transmitted via the information exchange channel (KOI) to the onboard computer system (BVS1) of the leader fighter "A" (Fig. 2, Fig. 4). In BVS1 of the leader fighter, based on a comparison of the measured ranges D ₁ and D _2, respectively, between fighter "A" and enemy aircraft "C", and fighter "B" and enemy aircraft "C", a strike fighter and a cover fighter are determined. In the event that D ₁ > D ₂ , fighter "B" is assigned as a strike fighter (Fig. 1), with radar 2 operating on the "I" and off SAP2 (Fig. 2), and fighter "A" - a cover fighter, with operating on radiation "I" SAP1 and switched off for radiation BRLS1 (Fig. 2). In the case D ₁ <D _{2, the} strike fighter is assigned to aircraft "A" (Fig. 3), on which the radar 1 operates on the radiation "I" with disabled SAP1 (Fig. 4), and the cover fighter is assigned to the aircraft "B", on which SAP2 is on and off for BRLS2 radiation. Information on the appointment of the second fighter from the BVS1 of the leader fighter "A" is transmitted via the information exchange channel (Fig. 2, Fig. 4) to the BVS2 of the fighter "B". After determining the strike fighter and the cover fighter, the fighters are guided to the air target - the enemy aircraft. Moreover, the strike fighter is guided by one of the known methods, and the cover fighter maintains the "front" form of battle formation with an interval L (Fig. 1, Fig. 3) between the pair fighters, determined by expression (1).

Thus, the proposed method will reduce the detection range of the enemy onboard radar when detecting and hitting fighters, while maintaining the capabilities of the strike fighter to defeat the enemy aircraft, that is, to increase the effectiveness of group actions of fighters by setting active jamming and maintaining the required parameters of the battle order.

Sources of information

1. Aviation radar complexes and systems: a textbook for listeners and cadets of the Air Force universities / P.I. Dudnik, G.S. Kondratenkov, B.G. Tatarsky, A.R. Ilchuk, A.A. Gerasimov. Ed. P.I. Angelica. - M .: ed. VVIA them. prof. NOT. Zhukovsky, 2006, figure 12.39 (analogue).

2. Zakomoldin D.V., Bogdanov A.V., Golubenko V.A., Kochetov I.V., Akimov S.I. Method of functioning of the system of pulse-Doppler airborne radars during group actions of fighters. Patent for invention No. 2728280, bull. No. 22, 2020 (prototype).

Claims (13)

The method of joint operation of onboard radar stations and active jamming stations during group actions of fighters, which consists in the fact that the pulse-Doppler onboard radars of a group of two fighters are combined into a system with information exchange channels, the fighter-leader is determined, the ranges are measured in each onboard radar to the enemy aircraft, the measured range in the onboard radar station of the second fighter is transmitted via the information exchange channel to the onboard computing system of the leader fighter, characterized in that the fighters of the pair are equipped with active jamming stations, in the onboard computing system of the leader fighter based on the comparison of the measured ranges D ₁ and D _2, respectively, between the first fighter and the enemy aircraft and the second fighter and the enemy aircraft, if D ₁ <D ₂ , the first aircraft on which the airborne radar with radiation with the active jamming station turned off, and the cover fighter - the second aircraft on which the active jamming station is turned on and the airborne radar station turned off for radiation, otherwise, when D ₁ > D ₂ , the second fighter is assigned as a strike aircraft operating on radiation an onboard radar station and an active jamming station turned off, and the first fighter - by a cover aircraft with an active jamming station turned on and an airborne radar station turned off for radiation, while the cover fighter maintains the "front" form of battle formation with an interval L between the pair's fighters, defined as

, where D _on - potential range of weapon use in the absence of interference; R _sap - the radiated power of the station of active jamming of the cover fighter; G _bl.sap - the directional action factor of the side lobes of the directional pattern of the antenna station of active interference; Δf _PRM - bandwidth of the receiver of the onboard radar station of the strike fighter;

- coefficient of directional action of the side lobes of the antenna pattern of the strike fighter; Δf _p is the width of the interference spectrum emitted by the active jamming station of the cover fighter; K _p1 - coefficient of suppression of the receiver of the on-board radar station of the strike fighter; P _brls1 is the average radiated power of the strike fighter's airborne radar;

- directivity factor for the main lobe of the strike fighter antenna pattern; σ _c - effective scattering surface of the enemy aircraft.

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