On the calm Indian Ocean, far away from the battlefield, a merchant ship is driving along the coast of Africa.

Just when all the crew had no intention of sleeping, while discussing this war not far from them.

On the sea not far from the merchant ship, a jet of water rose up, and a jet-black missile strung up from the sea, frightening everyone on board.

Immediately, the crew picked up the mobile phone and took the shot. The missile strung from the bottom of the sea was very huge, and the long missile ignited at a height of almost 15 meters above the water.

The intense fire illuminates the entire merchant ship and scares everyone.

However, before they could react, another missile came out of the water not far away. It was also ignited and lifted into the air, followed by a third missile also rising into the sky.

The captain of the merchant ship and many people were almost ashamed.

"nuclear war……"

The launch of a submarine-launched nuclear missile by a strategic nuclear submarine is this movement. Almost everyone on board believes that these are three submarine-launched nuclear missiles.

It really made them frightened, they were squatting and desperate.

The person who was scared next was naturally the Pentagon, but what they saw was not three missiles, but twenty-four missiles being launched.

"Ballistic missiles were found to launch warning signals around the Indian Ocean. The missile launch time was 15 seconds ago."

The launch of the V-2FJDD anti-ship ballistic missile, like other ballistic missiles, will produce tail flames, plumes and columnar smoke.

Although the solid rocket engine of the missile can use glycidyl azide polyether low-temperature combustion agent to reduce the temperature of the engine tail flame, add potassium salt to inhibit secondary combustion, reduce the concentration of smoke in the tail flame, use foamed polymer to suppress smoke, and use additives Make the emitted infrared radiation avoid the atmospheric window to reduce the probability of detection of US missile early warning satellites.

But in just fifteen seconds, the US space-based infrared system synchronized orbit early warning satellite still discovered the launch of a ballistic missile. Space-based infrared early warning satellites are more than ten times more sensitive than digital signal processing satellites, and can observe through the atmosphere.

However, considering that the missile uses a variety of infrared stealth technologies to reduce the infrared radiation of the atmospheric window, it will take about 10,000 meters or more where the air is thin to lose its atmospheric cover, so it is determined that the satellite discovery time is delayed by 15 seconds.

Synchronous orbit early warning satellites carry both scanning and staring infrared detectors, which are used for large-scale detection and small-area continuous monitoring respectively. If the missile is launched from the range where the detector may be monitored by the mobile launch method, the time of detection can be delayed.

It's just that the Indian Ocean is the center of the battlefield. The United States has a large number of satellites gathered, and it also cost a huge price to move a synchronous early warning satellite.

In order to find the anti-ship ballistic missiles in response to the Syrian Federation in time, after all, the previous destroyer Jones was sank cleanly and sounded a heavy alarm for the United States.

The rocker satellites that cost a lot of money originally made the Pentagon a little painful, but now, all that is left is fortunate.

At this moment, the NATO Indian Ocean Fleet is already in a bitter battle. If these missiles are allowed to succeed, the situation will be even more tragic.

"The early warning satellite began to measure the trajectory of the missile."

After the launched missile is locked, when the space-based infrared early warning satellite discovers infrared radiation, it must first distinguish its wavelength range and characteristics according to infrared characteristics, and then infer its temperature and even the type of propellant, and analyze and distinguish the target type (such as ballistics). Missile or launch vehicle), and then measure the vector velocity of the target.

Due to the use of infrared detectors, the observed missile trajectory is a continuous point, so enough data must be accumulated to determine the target trajectory. The scanning period of the scanning infrared detector of the US Space-based Infrared System satellite is 1 second, which is also completely The missile trajectory measurement can be completed within 10 seconds.

However, to measure the trajectory of ballistic missiles with infrared equipment, 2-3 satellites must be observed at different angles to obtain the ballistic trajectory in three-dimensional space. A single satellite can only obtain a projection on a one-dimensional plane, while fusion of other early warning satellites The observation data cannot be completed by the early warning satellite itself, and must be processed by the ground control station. Therefore, the missile trajectory obtained at this time lacks the ballistic height and inclination angle. It is only the velocity vector of the ballistic projection on the plane, not the true velocity vector of the missile. It is impossible to predict the target of the missile.

At this moment, the US military is in the Indian Ocean, and there is only one synchronous satellite. If it is in the Far East or Europe and the Pacific, the situation is completely different.

Within ten seconds after the satellite is discovered, the approximate target of the missile attack can be calculated, but in the Indian Ocean, there is almost no way.

"Immediately transmit the signal to the joint tactical ground station in the theater, the overseas ground station in Australia, and the North American Air Defense Command and the U.S. Space Command Early Warning Center in Cheyenne Mountain in the United States for data fusion and processing, and the fastest Speed ​​determines its trajectory."

In the Pentagon, the anti-missile command center reacted immediately, quickly distributing the data obtained by the early warning satellites to each data station, allowing more satellites to calculate the missile trajectory.

For the parabolic trajectory of a ballistic missile, its horizontal acceleration is the average value of accumulated data. It must be accumulated for a certain period of time to calculate the trajectory. For example, if the engine thrust remains unchanged, but the working time is extended any time, its trajectory must be different, so it only takes 10 seconds. The flight trajectory observed inside is not enough to determine the missile landing point~lightnovelpub.net~ and modern ballistic missiles mostly use maneuvering orbit change technology. The final trajectory cannot be determined until the end of the active phase, so the real missile landing point prediction is not It will soon be concluded that it will not be able to issue an alarm to the troops in the theater.

At this moment, the entire Pentagon is highly tense, although everyone is ready to accept another defeat by the Navy.

But failure is failure. Relying on the aviation power of the fleet at the moment and the defense of the fleet itself, even if the Iraqi-Syrian Federation has an advantage, there is no big problem in self-protection.

But if the opponent’s wave of missiles approaches, the situation is completely different.

After all, it was barely dealing with the carrier-based aircraft of the Iraqi-Syrian Federal Navy, and the entire fleet was confined to a relatively small place, and encountering such a missile attack would simply make the situation worse.

The calculation of the ballistic trajectory is also to enable the fleet's anti-missile system to better intercept it. Otherwise, no matter how good the defensive ability is, under the rapid attack of ballistic missiles, there is no advance warning, it is all for nothing.

(To be continued.) Enable new URL