N**D
发帖数: 10322 | |
l*****e
发帖数: 16384 | |
l*****u
发帖数: 12114 | 3 是呀。我很差异它的location data, 离我家就差2个号码。IP location database不知
道现在是不是做得这么恐怖了。。。。。。
【在 N**D 的大作中提到】
: 太准了
|
l*****u
发帖数: 12114 | 4 不是的，是大家手里这个WIFI的。用BING MAP定位我家，居然只差2个号码。网上试了
试IP geolocator, 差了将近20MILES，都指到别的城市去了。现在很好奇TP是怎么定位
的。
【在 l*****e 的大作中提到】
: 说是3G的model带GPS！
|
N**D
发帖数: 10322 | 5 偶的thunderbolt定位，错大概6-8个block
这个，误差半个block
很是怀疑内置gps
【在 l*****u 的大作中提到】
: 是呀。我很差异它的location data, 离我家就差2个号码。IP location database不知
: 道现在是不是做得这么恐怖了。。。。。。
|
N**D
发帖数: 10322 | 6 那有可能是被disable了
省事
【在 l*****e 的大作中提到】
: 说是3G的model带GPS！
|
f**k
发帖数: 2586 | 7 要真的，这个enable，tomtom。。。。。。。。。。。
涨钱啊
【在 N**D 的大作中提到】
: 那有可能是被disable了
: 省事
|
r********n
发帖数: 6979 | 8 gps定位一般也没有这么快吧
【在 N**D 的大作中提到】
: 偶的thunderbolt定位，错大概6-8个block
: 这个，误差半个block
: 很是怀疑内置gps
|
c******n
发帖数: 5697 | 9 lmao
TP的GPS准确率只是40米
【在 l*****u 的大作中提到】
: 不是的，是大家手里这个WIFI的。用BING MAP定位我家，居然只差2个号码。网上试了
: 试IP geolocator, 差了将近20MILES，都指到别的城市去了。现在很好奇TP是怎么定位
: 的。
|
l*****u
发帖数: 12114 | 10 TP定位是靠GPS还是基站？
试了
定位
【在 c******n 的大作中提到】
: lmao
: TP的GPS准确率只是40米
|
|
|
N**D
发帖数: 10322 | 11 一般的gps, 比如garmin, 精度就差不多这样， 靠地图匹配纠正
【在 c******n 的大作中提到】
: lmao
: TP的GPS准确率只是40米
|
k*n
发帖数: 1203 | |
l*****u
发帖数: 12114 | 13 谁在建立和维护这个HOTSPOT数据库呢？
【在 k*n 的大作中提到】
: wifi triangulation...
|
k*n
发帖数: 1203 | 14 from a 2009 macrumors forum post:
The service used by the iPod touch is powered by a company called SkyHook.
SkyHook does not restrict itself to "official" public WiFi hotspots. Instead
, it sends a fleet of vehicles down every navigable street within a covered
area, scanning ALL of the WiFi access points in the vicinity (both private
and public) and recording their unique signatures (called a MAC address, but
it has no relation to the popular computer platform) along with their
signal strength at various latitudes and longitudes.
Whenever the WiFi radio is turned on and CoreLocation is in use, the iPod
touch continually scans the MAC addresses and relative signal strengths of
all the WiFi access points in the vicinity (not just the one it happens to
be connected to), and queries those MAC addresses in SkyHook's database. It
can then use those results to triangulate your approximate location.
If SkyHook's database doesn't contain an entry for the WiFi access points
nearest you, or if the WiFi access point has moved since the last time
SkyHook refreshed its database, then the iPod touch will provide incorrect
location information. In that case, it is also possible for operators of
WiFi access points (including owners of private home networks) to submit new
information to SkyHook in order to help them improve their coverage. |
p**n
发帖数: 1437 | 15 拜托，说gps的都有点常识好么，你们见过gps在家里有找得到信号，反应这么快的么？ |
d******n
发帖数: 50 | 16 简单一个测试
你用GPS软件时候,WIFI是链接状态吗?如果是,那就什么都简单了 |
c*******r
发帖数: 3289 | 17
Instead
covered
but
这个比较奇怪,我换了新router，应该有新的MAC, 为什么location还是那么准呢？
【在 k*n 的大作中提到】
: from a 2009 macrumors forum post:
: The service used by the iPod touch is powered by a company called SkyHook.
: SkyHook does not restrict itself to "official" public WiFi hotspots. Instead
: , it sends a fleet of vehicles down every navigable street within a covered
: area, scanning ALL of the WiFi access points in the vicinity (both private
: and public) and recording their unique signatures (called a MAC address, but
: it has no relation to the popular computer platform) along with their
: signal strength at various latitudes and longitudes.
: Whenever the WiFi radio is turned on and CoreLocation is in use, the iPod
: touch continually scans the MAC addresses and relative signal strengths of
|
s****c
发帖数: 11300 | 18 location又不是靠你家的router 你家的无线路由器没有进入公众数据库
【在 c*******r 的大作中提到】
:
: Instead
: covered
: but
: 这个比较奇怪,我换了新router，应该有新的MAC, 为什么location还是那么准呢？
|
