By what mechanism does a fighter know that he is being targeted?

After World War II, when fighters were engaged in combat, they used a small shot control radar (similar to fire control radar, not exactly, it seemed to be called a ranging radar in the early days, and was first used on the F-86) to assist in targeting, this radar has a short scanning period and a narrow beam. The fighter is equipped with a radar warning device in the tail, and once it receives the radar signal of the enemy aircraft, it will give an alarm, and send out different frequency sounds according to the number of frequency points received from the opponent to prompt the pilot to take evasive actions. When the fighter is locked, the opponent's ranging radar wave will be received by a non-leaking alarm device, and the alarm will send out the highest level of alarm, and the pilot will know that he is locked.

When locked by the fire control radar of over-the-horizon missiles and surface-to-air missiles, the situation is similar to that of modern fighter jets, which is basically multi-functional, and one radar covers all scanning, fire control, and ranging.

The detection system of the general fighter is radar, and there are a few infrared detection as auxiliary equipment, on the contrary, the general third-generation fighter has a radar warning system, which will issue an alarm after being locked by the opponent's radar, and it is recommended that the pilot start to make a series of escape measures such as maneuvering to evade, release hot flares, jamming chaff, etc.

When a fighter is targeted by the enemy, it will be irradiated by the enemy's radar electromagnetic waves, which will generate an electric current on the metal part of the fighter jet, which will be sensed.

In fact, it is by detecting each other's radio waves.

To launch a missile, in most cases, it is necessary to target and lock through the radar, and the radar will continuously and strongly illuminate the target when it locks on the opponent's aircraft, and the radar wave signal at this time has the strongest and obvious characteristics, and the electronic system on the aircraft can detect it, so as to warn the pilot.

Detect radar waves or guided lasers emitted by the other party.

In movies, fighter pilots are often seen saying, "I'm locked!" "How did they know they were locked onto the radar?

Damn, my eyes have been opened, I want to know too!

All of them rely on radio waves to convey information. When the radar of the fighter or air defense system locks on to the target, they will constantly emit radio waves of a certain pattern to the target, so as to continuously obtain the azimuth distance speed of the target, which can enable the fighter or air defense system to launch further attacks. So far, China can be said to be very successful in science and technology, and it is also very successful in military terms.

The fighter is equipped with a sophisticated self-defense system that can detect and judge whether the enemy is using radar, laser or infrared means to detect and track itself, or launch missiles at itself, through passive detection. The two most important devices in the self-defense system are the radar warning receiver and the missile approximation sensor, the prototype of which is the tail protector, which is used to receive the enemy's radar irradiation signal in a certain airspace behind the tail.

When the enemy follows and tracks the machine, the tail protector is captured by the enemy's radar, so it sends a light or audible warning message to the pilot to avoid maneuvering. The tail protector later evolved into an all-round radar warning receiver, which was connected to the received signal from the enemy's fire control radar in the 2 or 3 cm band for alarm. Modern advanced radar warning receivers have high detection accuracy of threat radiation sources and can be used for the guidance of anti-radiation missiles.

When a fighter or anti-aircraft missile locks on to the target, it is noticeably different from the search state. For example, if the search state does not continuously transmit radio waves to the target, it will need to be scanned once in a while to achieve the full-view search function. To know that you are locked by the other party's radar, you first need to be able to distinguish the relevant radio characteristics.

However, we can get access to the adversary's radar, and we can lock on to their signals.

Therefore, fighter jets are now equipped with radar warning systems and missile approach warning systems, and as long as the local fire control radar is locked and the missile is attacking, the pilot can be provided with the location of the local radar and the missile, so that the pilot can make correct evasive actions.

In movies, fighter pilots are often seen saying, "I'm locked!" "How did they know they were locked onto the radar?

Because the fighter device has a device that automatically tests the radar lock, if the radar locks on the fighter, the fighter will make a self-prompt and produce a state of self-protection.

To know that you are locked by radar, you first need to distinguish the relevant radio signature. The method of obtaining the opponent's radar lock signal mainly relies on the recording of the opponent's lock signal obtained through reconnaissance and storing it in the lock alarm of the opponent's fighter plane, so that once the relevant equipment is locked in the future, the alarm will be issued.

Modern fighter jets generally have anti-control radars and warning devices. Therefore, when you are locked by enemy radar, an alarm will appear.

To put it simply, the fighter plane's radar emits radar waves and hits the enemy and then turns back, and the fighter can receive the echoes and analyze the enemy's situation, but change the radar wave from receiving itself to receive the enemy.

It mainly relies on the fighter tail warning sensor. When the tail of the aircraft is scanned by local radar or infrared signals, a friend or foe signal is sent. When a friendly scan is made, the friendly party returns a corresponding cryptographic signal.

In the case of a local scan, the enemy cannot return a corresponding password signal. At this point, the warning system sends a locked signal to warn the pilot that he is being locked by enemy radar. In order to find a way to avoid the danger of attack.

There are generally two types of locking, one is radar and the other is infrared. When you are scanned by radar, you will receive a trace amount of radar waves, and the warning system will alert you, but when you are locked by radar, you will receive a large number of radar waves, and the aircraft's warning system will alert. There is also infrared guidance, which locks the hotter engine of the aircraft, and when you are locked, the infrared sensing system will warn.

There are three main forms of fighter aimed at the target. 1. Rely on sights installed in the cockpit. The sights are generally mounted directly in front of the pilot.

The aiming display is engraved with a cross coordinate scale (cross flower) and polar coordinates (a circle like a target ring). When the target enters the middle of the cross, it is aimed in the middle.

2. Pilot helmet sights.

3. The naked eye of the pilot. It can also be used with the naked eye during the day.

There are many kinds of aiming. It generally has night vision. The tank is called a night vision device.

Radar, optical, laser and much more.

Long-range relies on radar, some rely on infrared and some rely on helmets to aim, and when hitting with aerial guns, press the crosshair on the display screen.

Some of them are on top of helmets, such as the American F-35 (Lightning), which has a helmet that can be aimed directly, and one of the features is that it can see through the cabin to the front and bottom of the aircraft.

direct (naked eye) aiming; Indirect radar scanner. Like a 14-inch TV display.

Over-the-horizon attacks use airborne radar or AWACS aircraft to direct sights on helmets for close-range combat.

Radar: Go check this.

The movie "Air Force One" is realistic.

These links, refer to them for yourself.

Because fighter jets are equipped with fire control radars, this radar can not only lock on enemy fighters, but also warn that their own fighters have been locked by missiles.

At present, the electronic equipment of fighters is advanced, and the radar early warning system is relatively mature, and it can quickly give feedback after receiving radar waves.

The fighter has a well-developed defense system, has a device that passively absorbs radar waves, analyzes its nature, judges its first and then divides the threat level, and then warns the fighter by discovering the heat source point of the missile.

Radar warning receiving devices, laser warning receivers and other sensors are installed on fighter jets, and when the fighter is locked by enemy aircraft, these devices can give early warning or alarm.

Fighters come with their own defense and targeting systems, and once they are locked onto by a missile, they will show that they have been attacked.

There are radars on airplanes, especially fighter radars, which are equivalent to human eyes, and a red dot on the radar is extremely close to you and it is not your own, then it is either an enemy fighter, or it is locked by an enemy missile.

In modern warfare, there is radar monitoring, and information can be transmitted between fighter pilots, and when the radar detects a missile, the radar of the general fighter will also detect the missile, and the analysis of the signal can also determine their current situation.

Modern warplanes have radar alarms.

If there is a radar wave that locks on itself, the alarm will sound.

And directions will be prompted.

The fighter is equipped with advanced electronic countermeasures equipment on board, and through the head-up display, the down-view instrument and the multi-function display can obtain information on the parameters of the enemy and our aircraft, so as to know whether it is locked by the missile.

The aircraft is equipped with an aviation fire control system controlled by a digital computer, which is composed of a pulse-Doppler radar with downward vision capability, an inertial navigation system, an atmospheric data computer, and so on, and can be cross-linked with the communication, navigation, and identification integrated system and electronic countermeasure system.

The driver obtains information on the parameters of enemy aircraft through head-up displays, down-view devices and multi-function displays, and controls and manages the aiming, launching, and delivery of missiles, cannons, rockets, and bombs.

The control of the fire control system is mounted on the steering stick and throttle handle, which facilitates the pilot's integration of aircraft driving and air combat. Due to the large number of devices that transmit information and the large amount of information, in order to reduce the number of cables and information transmission errors, a multiplexing data bus is adopted.

Why is there a lock alarm when a fighter is locked by a missile, tell the fighter pilot.

There is a device called passive radar warning system on the aircraft, this system judges the radar-guided missile by detecting the radar wave, when the aircraft is scanned by the radar wave, he will sense the electromagnetic signal different from the surrounding environment and send out a scanning alarm, when the radar locks the aircraft, it will concentrate all the energy on the target, at this time the received electromagnetic wave signal will rise sharply, the radar warning system will send out a lock alarm, when the missile is launched, the frequency hopping of the opponent's radar will be fixed in a frequency band, Active-guided missiles will have their own radar signals, at which time the radar warning system will inform the enemy of the incoming missile, and indicate the direction of the missile according to the direction of the radar wave. The F-35 is equipped with an all-day photoelectric sensor and a full-day radar, as long as a missile is launched, the missile type, speed, and direction can be determined 20 kilometers away, and the most comprehensive early warning can be obtained. But this system is not always effective, for example, if the direction of multiple radars is similar, he can only detect one, and if he countermeasures according to his working principle, it can also make it invalid, for example, the APG-77 radar used by F-22 uses a low-frequency signal group to hide its own radar waves in the environmental electromagnetic waves, so that the opponent's passive radar warning fails, and the purpose of complete stealth attack is achieved.

In addition, if the opponent's missile is infrared-guided, the radar warning system cannot detect it.

The warning of the radar is not the same as the attack, the alert is scanned, the radar wave is periodically scanned, and the fire control radar during the attack will always illuminate the target, if it is continuously irradiated for a long time, it means that it is going to be attacked, and the alarm will be given.

Haha, when the missile is launched or the radar locks the aircraft, the radar wave will be emitted, and the aircraft has an instrument to detect the radar wave, and when the radar wave of the missile or radar shines on the aircraft, it will be detected by the instrument and alarmed.

In film and television works, we often see fighter pilots reporting to the command team that they have been locked by enemy missiles and need to evade and release jamming signals. This behavior often feels very sci-fi, in the air battlefield, the plane may not be visible to the naked eye, so how does the plane detect that it is locked?

There's a radar that'll find out when it's locked.

Radar warning is mainly used to detect the radar lock wave of enemy aircraft.

There's also an optical detection thing for missiles, I forgot what it's called