Looking at the positioning results on the satellite navigation terminal, Ruan Yingjun's whole brain stopped for a moment.

The main thing is to highlight a confusion.

In fact, in general, for a surface ship unit like them, no one will specifically look at that altitude data at all.

Everyone is sailing on the sea, and it's all 0 anyway.

At most, there is an error of plus or minus 30 meters.

Because satellite positioning is not very suitable for altimetry in principle, this is normal.

But today's 350 meters is really too dazzling, and it's hard not to notice.

It's basically the equivalent of saying that they're sailing in the sky.

"Captain Ruan?"

The reporter looked at Ruan Yingjun, who seemed to be frozen in place, and called him softly again.

Although the GPS positioning terminal on the Fan Wulao is not the highest-level military terminal that receives P-codes, it is not a large-scale road cargo that can be bought everywhere, but a special purchase from the United States for refitting ships after relations between the two countries have warmed.

The operation interface is naturally also all in English, with a large number of abbreviations.

So an ordinary reporter naturally can't understand the interface, but needs the captain to introduce it.

After being called suddenly, Ruan Yingjun's whole person was almost excited.

He felt like a bit of a hell of a day today.

This interview is very important for the entire fleet of the Van Wu Lao.

If it goes well, many people will be promoted when they go back.

Therefore, he took two deep breaths and replied with a pretense of composure:

"Wait a minute, I'll refresh the location data."

As he spoke, he quickly started his hand and restarted the positioning terminal with trepidation.

And at the same time.

Dozens of kilometers away in mid-air, Tang Yiping's No. 01 plane, after making a big circle, also returned to the position near the dark sand of the Divine Fox at the beginning, and re-descended in altitude, preparing for the second round of testing.

Before entering the test airspace, he pressed the two buttons next to the multi-function display according to the process determined before takeoff, and adjusted the working mode of the "soft kill self-defense countermeasure system" from mode 3 to mode 4.

The former focuses on interfering with altitude data, and the advantage is that it will not affect the plane path of the interfered object, so it cannot detect any anomalies by the general path integration algorithm, but the price is that it can only deal with low-cost satellite-guided bombs.

Most of the more advanced cruise missiles will also have a radio altimeter, and it will not simply adjust the altitude because of the error in the altitude signal provided by the GPS and eventually crash.

The interference algorithm of the latter is directly aimed at the plane position data.

In addition, in order to avoid being detected by the inertial navigation system, the position information of the target will not be changed immediately at the beginning of the jamming, but will continue to accumulate errors as the jamming continues, causing the munition to deviate from the travel path.

This interference algorithm is obviously very complex, so it needs to maintain a stable interference for a long period of time to be effective, and if it is only used at the end of the phase, the effect will not be too obvious.

To this end, in addition to observing the jamming effect on the missile, this round of testing also depends on whether the heat dissipation and power supply of the pod can maintain continuous work for a long time, and whether it can aim at roughly the same current area under different attitudes of the aircraft.

In total, it takes more than half an hour.

Fortunately, the two auxiliary fuel tanks under the wing can provide sufficient fuel, but there is no need to worry about the lack of range.

As for mode 1 and mode 2, they are a mixture of the above two modes, but they require an external computer with sufficient performance to support sufficient computing power, which is not within the scope of today's testing.

After entering the test airspace in Mode 4 this time, the companion J-7 quickly observed that the three target missiles did not continue to fly northeast in the original direction, but turned to the northwest, and the angle of deviation gradually increased.

If it is a real battle, it means that these missiles have completely lost their effectiveness.

With such a large deviation of the route, as long as it continues to fly for a while, even if the interference disappears again, it will be considered by the guidance system to be a route error and self-destruct because the GPS data suddenly drifts back to the correct position.

……

However, such a jamming effect on the Fan Wulao, which is dozens of kilometers away, seems to be a completely different situation.

After Captain Nguyen Anh Thuan restarted the GPS navigation equipment, the altitude data that had just been displayed as 350 meters was indeed +5m again.

Within the normal margin of error.

And the latitude and longitude are not much different from before the restart.

"Hoo ......"

He finally breathed a sigh of relief.

Sure enough, restarting can solve more than 95% of electronic device failures.

"This is the navigation and positioning terminal of our new equipment, as long as you follow its route prompts during driving, the current celestial positioning is basically only used as a backup, in case the equipment fails......"

Ruan Yingjun, who recovered from the panic, wiped the sweat from his forehead and turned to introduce to the reporter behind him.

That being said, it was true that he hadn't really used a sextant for a few days to do navigation.

After all, this thing is not only troublesome in itself, but also has to check the equatorial coordinates of the corresponding celestial body, and it takes a lot of time to operate.

"I see......"

The reporter who didn't understand the Navy just recorded the content of the captain's introduction in his notebook as it was:

"Then next, I need to take a group of photos of the captain himself at the helm......"

As he spoke, the other media personnel accompanying him had already set up their cameras.

"I'm at the helm myself?"

Ruan Yingjun was stunned.

The captain himself is at the helm, which is basically a practice only in the days of sail warships.

And on modern ships, even ships with a technical level of the 60s, such as the Fan Wulao, a special steering team will be set up, and the captain is only responsible for issuing command orders.

While the captain must have been trained in steering, unless he or she was trained in a steering class and specialized in it, such as Masamichi Terauchi (Captain Yukikaze) or William Tennant (Captain Counterattack), it is almost impossible to compare technically with a dedicated helmsman.

But on the other hand, he also knows that ordinary people who watch Annan TV's news reports, as well as senior leaders, most likely don't know about it.

So it might make sense in publicity......

And to drive a boat on the high seas, with the support of the navigation system next to it, is it possible to drive a problem?

So, after a few trade-offs, he still nodded:

"Okay, but according to the rules, I can't be out of command for a long time, so just shoot a section."

As he spoke, he took the helm from the operator's hand.

The classification of the Van Wu Lao in the Red Navy is only an "escort ship", because of its small size, the difficulty of operation is not too large, and the weather is sunny and the blue waves are high today, so Ruan Yingjun even has extra energy to answer the questions provided by reporters from time to time.

But while it was on, Ruan Yingjun felt that something seemed wrong with the situation.

The GPS navigation system keeps warning that the sailing direction is off, and he has been adjusting the course according to the navigation display.

"I'm already so bad at manoeuvring my ship?"

Ruan Yingjun couldn't help but start to doubt his own level.

After all, I haven't really gotten my hands on it for years.

But even so, you can't even operate a ship in a straight line......

Or is there a problem with the steering gear system, which causes the steering wheel to have a deviation angle when the steering wheel is in the middle?

Possibilities flashed through the captain's mind.

However, the open bridge and the hot weather in the equatorial region near noon in June made it difficult for him to maintain a calm mind, so he continued to drive according to the GPS navigation data for the time being.

He subconsciously looked up at the sky, but the celestial navigation during the day could only look at the sun, but near the equator, the accuracy of positioning by the sun was very poor......

What's more, there are reporters and cameras next to him, and if he runs out to use the sextant at this time, it seems that he is very unskilled as a captain.

At this moment of confusion, the images and numbers displayed on the navigation system suddenly began to beat wildly.

Then the error was reported directly, and a bunch of garbled characters appeared.

"What the hell is it today...... What's going on? ”

Ruan Yingjun felt as if God was working against him.

The GPS, which has never had a problem in the past few years, is falling off the chain at this critical time today.

If there is a scandal in the report of Annan News, then his next promotion may be far away......

"Sure enough, I still can't trust those Yankees too much......"

After complaining in his heart, he could only come up with the old way of restarting.

By the way, I had to keep chatting with the reporter so that the other party's attention would not be diverted to the anomaly of the navigation system.

But in the dark, Ruan Yingjun already felt that this voyage would not be too smooth.

A few minutes later, the GPS was connected to the satellite signal again.

However, the data that reappeared on the screen showed that the ship was now heading northeast, not southeast.

The position is also about 20 nautical miles off from before the restart.

This means that he is now approaching the sea area that is not under the actual control of the Annan side.

“？”

Ruan Yingjun felt that he was about to hold back anymore.

What he carried out was obviously just an ordinary transportation mission, why did he come here for some reason?

"Report to the Captain!"

Suddenly a report came from the lookout post on the bridge:

"In the 295 direction, about 10 nautical miles, there is a ship of unknown type with the flag of the Huaxia Navy!"

(End of chapter)