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Japan to expand GPS network to 11 satellites, reducing foreign reliance

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However, concerns have arisen that if GPS access is restricted by the United States for some reason

This will never happen. Doesn't really make sense to spend money worrying about it.

-2 ( +6 / -8 )

Prudent move. Better to be self-reliant in food production, energy and communications

6 ( +9 / -3 )

Taiwan,Japan do.not have a GPS constellation,these are only repeaters that repeats the US GPS signals

2 ( +6 / -4 )

However, concerns have arisen that if GPS access is restricted by the United States for some reason

“This will never happen. Doesn't really make sense to spend money worrying about it.”

How can you be so sure?

1 ( +6 / -5 )

For "some reason" equals Trump asking for money.

3 ( +6 / -3 )

"Japan do.not have a GPS constellation,these are only repeaters that repeats the US GPS signals"

Really?

What's this then?!

Overview of the Quasi-Zenith Satellite System (QZSS)

"QZSS (Michibiki) has been operated as a four-satellite constellation from November 2018, and three satellites are visible at all times from locations in the Asia-Oceania region. QZSS can be used in an integrated way with GPS, ensuring a sufficient number of satellites for stable, high-precision positioning. QZS are compatible with GPS"

"https://qzss.go.jp/en/overview/services/sv01_what.html"

4 ( +4 / -0 )

MeiyouwentiToday 08:39 am JST

However, concerns have arisen that if GPS access is restricted by the United States for some reason

“This will never happen. Doesn't really make sense to spend money worrying about it.”

How can you be so sure?

Because why would we limit satellite access to an ally?

-2 ( +3 / -5 )

gogogoToday 09:22 am JST

For "some reason" equals Trump asking for money.

Unlikely Dump will be that petty when he is busy trying to overturn democracy at home.

-2 ( +3 / -5 )

However, concerns have arisen that if GPS access is restricted by the United States for some reason

This will never happen. Doesn't really make sense to spend money worrying about it.

Au contraire. In a war with Russia or China the US would undoubtedly restrict GPS to use by friendly forces only.

5 ( +6 / -1 )

Because why would we limit satellite access to an ally?

In a major war the free civil GPS signal would possibly be turned off. Even the civil signal offers opportunities for adversaries to exploit. The JSDF would probably have access to the encrypted military GPS signal.

3 ( +4 / -1 )

Desert TortoiseToday  11:56 am JST

In a major war the free civil GPS signal would possibly be turned off. Even the civil signal offers opportunities for adversaries to exploit. The JSDF would probably have access to the encrypted military GPS signal.

Encryption doesn’t help as the signal itself is so easy to block by transmitting on the same frequency.

-1 ( +1 / -2 )

Taiwan,Japan do.not have a GPS constellation,these are only repeaters that repeats the US GPS signals

i guess you do not even know how GPS works.

Basically they are only sending out time kept within the satellite and the receiving component calculate the distance based on the time difference.

So basically ALL GPS satellite regardless which nation controls sends out same signals.

1 ( +1 / -0 )

TaiwanIsNotChinaToday  06:48 am JST

However, concerns have arisen that if GPS access is restricted by the United States for some reason

This will never happen. Doesn't really make sense to spend money worrying about it.

I believe there is a segment of the Chinese PLA that is tasked with ensuring that the US GPS system will be nonfunctional in the country that hosts the largest number of US military assets in Asia.

"China is rapidly expanding its military capabilities in outer space as well. Its killer satellites are capable of destroying U.S. as well as Japanese satellites. Chinese attacks could affect satellite communications through the global positioning system (GPS) we use every day and command, communications and intelligence gathering by the U.S. and Japanese militaries, preventing us from taking even defensive actions. The U.S. level of awareness of Chinese threats has risen to the highest ever point."

https://centerforsecuritypolicy.org/china-is-a-national-security-threat-to-japan/

-1 ( +2 / -3 )

This will never happen. Doesn't really make sense to spend money worrying about it.

Right, I wonder why the European Union, Japan etc... are making their system. Also, the US can not be fully trusty are they are able to re-elect a Convicted Felon, cheater, traitor, a dictator on day one, putin / kim jong un lover, etc....

0 ( +3 / -3 )

Gps can ba used by everyone.

If US wants to restrict use by enemies , friend's use will also be restricted

-1 ( +1 / -2 )

So many on JT love to talk of preparation for war. Better to encourage peace today.

-4 ( +2 / -6 )

deanzaZZRToday 01:59 pm JST

So many on JT love to talk of preparation for war. Better to encourage peace today.

I agree. China should stop saber rattling.

2 ( +3 / -1 )

So many on JT love to talk of preparation for war. Better to encourage peace today.

Tell this to the Russian, Chinese, North Korean first.

4 ( +5 / -1 )

Well done Japan. We need to have our own system in place. We cant trust America.

1 ( +2 / -1 )

Speaking of wars which country is always and most involved in wars not even close to their border?

-3 ( +2 / -5 )

Which country has 800 bases around the globe

-3 ( +2 / -5 )

ianToday  04:18 pm JST

Which country has 800 bases around the globe

By invitation and treaties. Name a country that would willfully want the Chinese PLA or the Russian Army on their soil.

4 ( +4 / -0 )

Encryption doesn’t help as the signal itself is so easy to block by transmitting on the same frequency.

There are ways to defeat a jamming signal. You can probably find some descriptions of the technology from open sources on the internet. Civil users won't have that equipment but military hardware does.

0 ( +0 / -0 )

Gps can ba used by everyone.

If US wants to restrict use by enemies , friend's use will also be restricted

Umm, not necessarily so. Allied military units would have access to the encrypted military signal. The civil signal would not be present however.

0 ( +0 / -0 )

By invitation and treaties. Name a country that would willfully want the Chinese PLA or the Russian Army on their soil.

China has PLA bases in Tajikistan and Uzbekistan, and their Navy has a base in Djibouti. The Sudan military invited the Russians to establish a base in Port Sudan after the civil government the military overthrew told the Russian to pack and leave. The Russians seem pretty popular in Chad along with Mozambique, Libya and Mali. They kill the regimes opponents with no qualms about violating basic norms of civility or human rights.

0 ( +0 / -0 )

I believe there is a segment of the Chinese PLA that is tasked with ensuring that the US GPS system will be nonfunctional in the country that hosts the largest number of US military assets in Asia.

That is why the US has been pushing eLORAN so hard. It is portable unlike previous iterations of LORAN, and because it operates at very low frequencies and is very powerful it cannot be jammed.

0 ( +0 / -0 )

ianOct. 7 04:16 pm JST

Speaking of wars which country is always and most involved in wars not even close to their border?

Doesn't matter how far away from the border it is. The russian is involved in the most devastating war atm.

0 ( +0 / -0 )

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