Everyone began to move.
In order to obtain radio signals, there needed to be a circuit that coordinated the signals.
Then, he used a directional antenna and a signal receiving device with encryption.
After that, he used this device to scan the signal.
Through the strength of the signal, he could further adjust the receiving end and add an amplification device.
In this way, radio signals of different frequencies could be intercepted.
The military already had such equipment.
Therefore, Li Fan did not need to worry!
The only thing he had to do was to choose the right sonofloat to enter the sea and determine which signal channel was useful.
......
Under Zhao Yi's lead.
A few soldiers stood on the deck and lowered the sonofloat into the sea.
Immediately after.
Dong Hua and the others turned on the signal reception equipment on the deck.
He also contacted the deciphering experts of Huaqing University and asked them to participate remotely to help with the deciphering!
Not long after the sonar was put in.
The receiving device had already received the signal.
Dong Hua looked at the signal on his laptop. There were a total of 99 channels!
There were so many channels.
Deciphering them one by one would take a lot of time.
Moreover, this was a military radio.
The encryption of military radio was even stronger!
It would take at least three months to decipher all 99 of them.
In short, it was a word.
Difficult!
Dong Hua frowned and stared at his laptop.
"Old Antique, how is it?" Sun Wen asked.”
Dong Hua said," We did intercept the signal, but there are 99 channels. There's so much data. It's too difficult to decipher all of them."”
Zhao Yi heard this from the side.
"Professor Dong, isn't it good to have more data?”
"Decipher it slowly. If we can decipher all of them, won't we be able to grasp what information the foreign army has detected?”
Dong Hua waved his hand.
"That's not what I meant. Let Xiao Li explain it to you.”
"Xiao Li's logic is more concise. I'm afraid you won't understand.”
Zhao Yi turned his gaze to the calm Li Fan.
Li Fan explained to him,
"This sonoBuoy is an ocean temperature measuring float.”
"It has two main functions. One is to measure the water temperature, and the other is to locate other floats.”
"We only need the location data now. As for the water temperature data, we don't need it.”
"I see." Zhao Yi nodded.
Sun Wen continued,
"This sea area is ours. We all know the marine environment here, so the water temperature data fed back by this sonar is useless to us!”
Dong Hua sighed.
"Among these 99 signal channels, 95% of the signal data is water temperature data. Such data is useless to us.”
"In other words, our goal is to find the data of the location channel among so many channels, right?" asked Zhao Yi.”
"That's right!"
He looked at the complicated data on the notebook.
Everyone was silent for a while.
"Huaqing University has very strong deciphering abilities. They might be able to decipher everything in two months."”
Dong Hua shook his head.”
"They'll definitely change the signal channel again. At that time, we'll only be drawing water with a bamboo basket.”
Sun Wen spread out his hands.
"In that case, it's still a waste of effort!”
At this moment.
Li Fan looked at Dong Hua's laptop for a while.
"Professor Dong, can you show me the frequency diagram of these signals?"”
"Of course!"
Dong Hua opened all the signal data.
The waves on the screen were stacked!
It was simply a headache!
Li Fan looked at it carefully and asked,
"Professor Dong, where do these signal frequencies range from?”
"From 131 to 2068 Hertz," said Dong Hua.”
Li Fan picked up a piece of paper and a pen and calculated on the paper for a while.
He said,"Try to get Huaqing University to decipher the signal at 257 Hertz.”
Dong Hua picked up the draft paper in front of Li Fan.
He looked at the data on it.
257Hz......
How did he get this data?
He was puzzled and asked shamelessly.
"Xiao Li, how did you calculate this?”
" The power of this sonofloat's transmitter is 0.25 Watt," Li Fan said." The water temperature sensing range is 0 to 34 degrees Celsius."”
"The difference between the positioning channel and the water temperature data channel should be related to the power and the sensing range.”
"I didn't calculate the 257Hz data. I only used the function to take the interval to guess it.”
Dong Hua said.
He actually didn't quite understand what Li Fan meant!
However, he had no idea what to do now.
He could only try the value that Li Fan had deduced!
"Alright, then I'll ask Huaqing University to help us decipher the data of the 257Hz frequency."”
After sending the data to Huaqing University.
Everyone just sat and waited
Li Fan had already given the specific channel's value.
Therefore, he had to decipher it.
It wasn't too difficult.
An hour later.
Dong Hua received a call from Huaqing University.
He went to the bow of the boat to answer the phone.
When he returned, he shook his head at everyone.
He said," This frequency isn't right. The data deciphered by the deciphering personnel is the water temperature data, not the location data.”
Li Fan's heart skipped a beat.
Could it be that he had miscalculated?
There were also times when he made a mistake?
It shouldn't be!
He had actually done a lot of work last night. What went wrong?
Just as everyone was filled with sorrow.
Dong Hua laughed loudly.
"I was just joking with you! The data was not the water temperature data, but the positioning data of the float!”
"Really?" Sun Wen's eyes widened.
Dong Hua laughed and opened his email for Sun Wen to read.
"Look, it's just location data!”
Sun Wen slapped Dong Hua's shoulder.
"You old fogey, you only know how to scare people!”
So it was.
Li Fan was relieved.
He knew it. How could he have made a mistake!
——————
A flower, a ticket, and a gift were very important to young authors. I beg for the support of my brothers.
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