Geography error and wearing lens in the film assassination of Kim Jong-un (for entertainment only)

In the first 15 minutes,  communications officials called the producer Aaron Rapaport and gave him a coordinate to meet with the  side, which was given in decimal degrees and latitude and longitude:

"Latitude 40.1326, longitude 123.9889", note: The official did not indicate the latitude and longitude of the east, appear very not rigorous. You know that there are 4 coordinate combinations, who knows you must be near North Korea?

Aaron asked the  officials where the position was, and replied that in "The west of Dandong, northeast in China", but this coordinate is really in the Dandong West 50km, we put the coordinates on Google Earth to measure it. (this coordinate is converted into degrees and seconds in the form of: 40°7 ' 57.36 ", 123°59 ' 20.04")

It can be found that the actual location is not 50 km west of Dandong, but 34.5 kilometers west of the north, which is the obvious low-level error, mishap.

Aaron then went alone to northeast China, sat hard sleeper train and Cantonese-speaking uncle drank beer to play selfie, happily arrived at the destination. At this point, Aaron, in order to find the coordinates of the location, the use of a model for the GPS 76 handheld GPS receiver (using the positioning method to determine where a designated coordinate point, the process is called "loft" mapping). You can imagine that Aaron has already entered the target coordinates into a GPS handheld and then lofted it, following its instructions to find a destination. As he climbed to a hillside, the receiver issued a arrive destination reminder to see:

At this point the receiver displays the current coordinates: n40°07 ' 57.6875 ', e123°59 ' 20.2294 ',

 officials gave the coordinates are: n40°07 ' 57.36 ', e123°59 ' 20.04, there is a difference, how much worse?

Two points are marked out, found that the actual difference of about 12.2m.

Why is it different?

GPS receiver at the top left there is a location:±18ft display, we think it is a measure of positioning accuracy, GPS positioning itself has an objective error, 18ft about 5.5m, in fact, is less than the actual 12.2m deviation. So we can only assume that the GPS 76 set a buffer, when it enters the buffer range around the target point is considered to have arrived, and buffer is greater than 12.2m. Otherwise we can only believe that the GPS 76 of the device itself is not reliable quality.

If these horizontal position error can also be barely make sense, that GPS 76 display the top of the 8547ft is what?

We know that the results of GPS positioning include characterizing the latitude and longitude coordinates of the horizontal position and characterizing the elevation value of the altitude, then the 8547ft of the receiver should be the elevation reading of the current position. But how high is 8547ft? Turn into metric units of about 2605m, when the error is big. We can read the elevation of a position directly from GE, such as where Aaron stands, and GE shows elevation at 172m.

Although the elevation values given by the GE free version will be dozens of meters to hundreds of meters of error, it is obviously not possible from 2605m to 172m.

See the latitude and longitude is so true I thought the interview crew really drove to this small hill in the northeast frontier to the pursuit of real reality is the industry conscience, but I was wrong. Although well-intentioned, but still wear help.

In fact, from the scene of this episode, Aaron arrives at the top of the hill with rugged peaks and stretches of snowy Mountains in the distance:

But actually from GE's DigitalGlobe satellite image to see, his around dozens of km radius is surrounded by castle Peak, occasionally town, there is no xianfeng and snow-capped mountains, once again proves that the framing position and coordinates do not match.

The first 41 minutes, the CIA transferred the United States Air Force Base in Osan City, South Korea launched the UAV delivery poison to the protagonist,

Where's Osan? Osan is the Osan City of Korea, the air base is Osan Air Force Base (http://zh.wikipedia.org/wiki/%E7%83%8F%E5%B1%B1%E5%B8%82), Wikipedia shows that the base is actually located in the city of Pyeongtaek (PYeongtaek), we obtained the approximate coordinates of Pyeongtaek from Google Maps: N36.998376, E127.112688, and measured it to Pyongyang in a straight line distance of about: 255km.

41 minutes 54 seconds, while watching porn and playing pinball game drone pilot remote control launched the UAV, and told the CIA: "ETA to launch Zone:20 Minites", that is, the UAV from the city of Pyeongtaek to Pyongyang only about 20 minutes, what is the speed? 255km/20min≈765km/h. What is the concept of this speed? If the cruising rate of a normal airliner such as Boeing 737 can reach 780km/h, will the UAV used in the film also be able to fly this speed? From the look of this kind of aircraft, the feeling is familiar:

Yes, it's the most famous predator in America. Unmanned aerial attack: http://zh.wikipedia.org/wiki/MQ-1%E6%8D%95%E9%A3%9F%E8%80%85%E6%97%A0%E4%BA%BA%E6%94%BB% E5%87%bb%e6%9c%ba, while the Predator drone's maximum cruising speed is only 165km/h, far less than 765km/h.

So we have to think:

Or is the writer for the plot need to create a eta=20min tension atmosphere and seriously exaggerated the performance of the Predator drone, otherwise it will fly to Pyongyang need at least 1.5 hours, yellow vegetables are cold;

Or is the U.S. military actually snow hidden a performance far more than the predator's military uav......just kidding

Anyway, under objective conditions, it would be unrealistic to say that 20 minutes flew to Pyongyang.

In the end, Dave and Aaron walked west to the west coast of North Korea through an abandoned pit tunnel in Pyongyang, and measured a straight-line distance of 30km (not) from GE, and the seals said they found them based on the GPS signal from the protagonist's watch. This is another common intellectual error in a movie: And do not say how the watch from the tunnel to send out the signal, GPS receiver once entered the tunnel is certainly not working, this is the basic knowledge of the surveying and mapping industry.

Not to mention the 30km long tunnel, the walk through the time must be a few hours, GPS signal lost so long, location simply cannot infer.

It is recommended that the writers use the GPS setting in the plot to upgrade to using the POS (position and orientation system) systems, i.e., the Gps+imu (Inertial measurement unit, which is popularly known as the Inertial Navigation system). With the IMU, even in the case of GPs not working or losing lock, the POS system can still record the trajectory more accurately, so that the tunnel can still be traced and will not become a technical mishap.

Some people say, not have AGPS technology? Well, you have to think about it in North Korea.

Finally, breaking news, at the beginning of the film, shows a  missile that could hit the west coast of the United States:

Is this trajectory right? This is the long-term use of the horizontal version of the world map of the world's geopolitical landscape caused by deep-rooted influence. In fact, it is not necessary to cross the Pacific from the eastern hemisphere to the Western hemisphere without taking into account the special climatic conditions of the polar regions and the effects of geomagnetic fields on aircraft. The trajectory of the show is not the closest route from North Korea to the United States, and the nearest route should be the counterclockwise along the surface of the Earth-some farther north. With GE's measurement tools, it can be easily drawn.

OK, that's what the interview found in last night. Some of the professional-related errors and wearing lenses.

I'm not a Virgo, I'm serious.

For entertainment only, feel big.

Geography error and wearing lens in the film assassination of Kim Jong-un (for entertainment only)