The commander of the United States Aerospace Forces once said that Chinese and United States space electronic warfare occurs every day, and in fact the same situation is in the land, sea, and air of the earth. I once detailed the classification of radar waves in the video of the Air Police 3000, which is basically meter wave, centimeter wave, millimeter wave, from very high frequency (VHF) to P-band, L-band, S-band, C-band, X-band, Ka/Ku-band, generally speaking, the longer the wavelength, the farther the detection distance, but the worse the accuracy, mainly used for long-range warning radar. The shorter the wavelength. The shorter the detection range, the higher the accuracy for fire control and guidance. The fire control radar of aircraft and warships basically uses the X-band, and the Ka/Ku-band is generally used on missiles. The early warning radars are basically the bands above S and L except for the fire control radar band.
Fire control radars are rarely used in peacetime. Once used, it will cause diplomatic disputes, and China, the United States and Japan have protested against each other turning on the fire control radar. Any radar has its own unique radar fingerprint characteristics, this signal signature is highly confidential, once leaked, the opponent will modulate the same signal out, and their radar screen will show a snowflake.
Therefore, the electronic reconnaissance ships of China and the United States are collecting all kinds of radar signals all the time. This is also one of the reasons why the fire control radar is easily not turned on, and even in actual combat, the fire control radar has a very short time to turn on. Usually the warning radar P-band, the L-band first intercepts the target, and then relays to the S-band medium-range radar, after the target enters the range, it quickly switches to fire control mode, and the fire control radar is turned on, locked, fired, and shut down, and it will not take a long time to turn on and search for the target.
Military experts on the island of Taiwan said that the Chinese Navy's phased array S-band radar usually does not dare to turn on the ship's power is insufficient, which is a layman's saying that does not understand radar, and the phased array S-band of warships around the world will not be turned on at ordinary times to protect their radar signal characteristics.
The early warning radar is turned on almost 24 hours a day, and mutual irradiation will not cause any disputes, and the early warning radar is the highlight of electronic countermeasures in peacetime, which is why electronic confrontations between China and the United States occur every day.
During the War to Resist US Aggression and Aid Korea, the War to Resist US Aggression in Vietnam, and the territorial air defense operations against Chiang Kai-shek in Taiwan, China obtained a large amount of equipment and data, accumulated experience in electronic countermeasures, and developed a lot of equipment. In 1967, an electronic warfare unit was specially formed. After the reform and opening up in the 1980s, everything gave way to economic construction, the military had to be patient, and the technological gap with United States was rapidly widening.
In the 1980s, a Chinese conventional submarine drove out a submarine of unknown nationality, only to strayed into South Korean territorial waters and was blocked underwater for nearly a month due to false signals released by the other side. After the incident, the relevant personnel were punished.
In the Anglo-Afghan war of 1982, United Kingdom won, but the losses were not small, the battle of Israel's Bekaa Valley that occurred in the same year, Israel won a complete victory, almost no losses, Syria was much stronger than Argentina at that time, the only difference is Israel, United States crushed Syria, the former Soviet Union in electronic warfare technology.
During the Iran-Iraq war, Iran fired at least five Chinese-made C601 anti-ship missiles at United States frigates, which were electronically jammed and destroyed an oil tanker instead of hitting the target.
In the 1991 Gulf War and the 1999 Kosovo War, the United States took electronic warfare to the extreme, almost suppressing its opponents to the point of "aiming with the naked eye and intelligence by hearing and hearing."