151–160 of 275 posts
https://www.ncesc.com/geographic-faq/what-is-the-difference-...
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Pretty insane for the writer or even China/Russia to believe the US, with all of its resources, wouldn't be able to make their own accurate maps.
Pretty insane for you to believe that a foreign country from afar could produce mapping data with the same degree of accuracy, detail and realtime freshness as a local provider on the ground. Of course there's military value in protecting mapping data from foreign adversaries, at the very least it adds a a time delay and some uncertainty to the data. It also probably makes it harder for some unsophisticated terrorist…
The CCP newspaper report on this is… Interesting: > Faced with such a "hard nut", Li Chengming strengthened his confidence: "In the war years, Communists were not afraid of death. This difficulty is nothing! We must do it! And we must do it beautifully!" Under the guidance of veteran experts, he led his team to fight for a thousand years. Over many days and nights, a set of nonlinear confidentiality processing techno…
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Indeed, despite its apparent illegality, China seems to be fairly well-supported and well-mapped by OpenStreetMap, at least in major cities. And is entirely mapped in normal WGS-84 without the obfuscation problem. In any case, according to Wikipedia, open-source code is available to convert between WGS-84 and the obfuscated GJC-02 coordinates. Since technology seems to have caught up with it, is there any advantage (…
Great point. This seems like low-intelligence autocratic bullshirt more than anything. Does the CCP really think that the US military are going to use ordinary street msps to target their missiles and that this obfuscation will protect them from on-target hits? Sure, in WWII there were a few apocryphal instances of bad maps foiling an attack, but that was decades before mapping satellites. As mentioned, it's been a l…
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Indeed, despite its apparent illegality, China seems to be fairly well-supported and well-mapped by OpenStreetMap, at least in major cities. And is entirely mapped in normal WGS-84 without the obfuscation problem. In any case, according to Wikipedia, open-source code is available to convert between WGS-84 and the obfuscated GJC-02 coordinates. Since technology seems to have caught up with it, is there any advantage (…
I want to know why Google hasn’t corrected their map overlays. The shift in the roads makes it frustrating to look at.
Here’s where it gets interesting — GCJ-02 is based on WGS-84, but with a deliberate obfuscation algorithm applied to it. The effect of this is that there are random offsets added to both latitude and longitude, ranging from as little as 50m to as much as 500m. Holy shit. I can't believe they created an adversarial mapping standard. That is insane. It really paints a picture of their worldview I think. The oppressed "…
It’s a fairly common practice to have a localized geodetic datum defined for a country. WGS84 isn’t necessarily sufficiently accurate for all purposes, continental plates drift, the ellipsoid can be adjusted to local circumstances and so forth. When you want to compare very precise measurements over time, WGS84 is too imprecise. Most of course avoid obfuscating their own maps, it seems like that is a result of 2002 l…
Here’s where it gets interesting — GCJ-02 is based on WGS-84, but with a deliberate obfuscation algorithm applied to it. The effect of this is that there are random offsets added to both latitude and longitude, ranging from as little as 50m to as much as 500m. Holy shit. I can't believe they created an adversarial mapping standard. That is insane. It really paints a picture of their worldview I think. The oppressed "…
> Tho reading some other comments, it seems it's not so hard to undo this...maybe this is not really about war or such attitude tho...but then why? https://en.wikipedia.org/wiki/Restrictions_on_geographic_dat... > There is a licence fee associated with using this mandatory algorithm in China. Tax dollars? And appeasing the bureaucracy? Also, looking at the citation note, I get the impression that a Mr. Li Chengming p…
Here’s where it gets interesting — GCJ-02 is based on WGS-84, but with a deliberate obfuscation algorithm applied to it. The effect of this is that there are random offsets added to both latitude and longitude, ranging from as little as 50m to as much as 500m. Holy shit. I can't believe they created an adversarial mapping standard. That is insane. It really paints a picture of their worldview I think. The oppressed "…
Given e.g. the USA military buildup in the South China sea, perhaps the paranoia isn't entirely unfounded?
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> This is true. Anti-Chinese sentiment right now is high worldwide. And had been high since the 19th century. Look up Chinese Exclusion Act. I know the Act, and it's awful. But I don't think it's "true". At least we can agree that Chinese seem to have a sense that the world is "against" them. I'm sure it seems it's true if you're Chinese, but for a country that literally describes anyone "non Chinese" as "outsider",…
a country that literally describes anyone "non Chinese" as "outsider" The US describes non US people as aliens. Both when they're from Mexico or from Mars
But in everyday parlance no, the US does not. But everyday Chinese describes "non Chinese" people as "outsiders". Hahaha! :) That's the point :)
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That probably makes the paranoia even more founded? Especially when their (perceived) adversary has the habit of regularly starting illegal wars.
And let's not forget that the US recently stationed troops on a tiny Taiwanese island that's less than ten miles from the Chinese mainland. And at a time when the US is sabre-rattling over Taiwan, and is about to give Taiwan billions of dollars for "defence". And elsewhere in the world, the US almost seems to be trying to start WWIII. In the current climate, being paranoid is the sensible option.
A handful of US troops is not a significant deployment, and I think there's many ways that US and Chinese militaries actually collaborate and communicate, and one of these is (most likely) through the plausibly deniable route of Taiwan.