satellite jamming

Satellite communication has played an important role in the global communication field since its emergence in 1960s. With the emergence of the Internet tornado, the satellite Internet technology combined with the Internet has become a new hotspot in the development of satellite communication. Satellite Internet technol

Tags: Wuhan satellite map Baidu The commercial map of Wuhan satellite is displayed on the 15th, 17th, and 19th levels respectively. The downloaded map is a whole large image, and the full map is a commercial map on the 19th level. The images are for reference only, it cannot be used for commercial purposes. The Wuhan satellite map is downloaded from Baidu

Tags: HD satellite map Baidu map Guangzhou satellite map The map of Guangzhou's high-definition satellite map shows 15 levels, 17 levels, and 19 levels of maps. Generally, 17 Levels of map images can be used for commercial use. The map package contains a whole high-level picture, to view the full image, use the professional image processing software ps. General

Android-satellite-menu Implementation Click the Main button, will pop up a plurality of buttons arranged around the main button, thus forming a satellite pop-up menu. The animation of the child buttons popping up and disappearing is great. This pop-up menu button is applied in Path2.0. Usage in your V Add a component definition to the Iew XML, as shown in the following example: properties are:

communication, paging transmitter frequency interference, broadband repeater, CDMA downlink on the uplink of the interference, TV frequency multiplier on the uplink interference, PHS to GSM interference, electromagnetic interference and so on. There are a wide range of interference in the network, and it is difficult to analyze and locate. Classification of disturbances According to the frequency division characteristics of mobile networks, the following conditions are more than net interfere

Wireless jamming can be divided into WLAN interference and non-WLAN interference by type. WLAN interference refers to the interference source to send the RF signal also meet the 802.11 standard, in addition to the non-WLAN interference. The interference of WLAN can be divided into same frequency interference and adjacent frequency interference according to frequency range. According to the source division, can be divided into WLAN network itself mutua

. A very simple way to obtain a convex packet is to divide the point set into two parts, calculate the convex packets of two smaller sets, and merge them. Each set is split again until the number of elements is small enough (for example, three or fewer), so the convex hull can be easily obtained.Toussaint proposed to use the rotating jamming case to find the bridge between two convex polygon. The main advantage of this method is that it uses backtrack

,...,Pn}. Begin P0: = pN; Q: = next [p]; while (area (p, next [p], next [Q])> area (p, next [p], q) do Q: = next [Q]; q0: = Q; while (Q! = P0) Do begin P: = next [p]; print (p, q); While (area (p, next [p], next [Q])> area (p, next [p], q) Do begin Q: = next [Q]; If (p, q )! = (Q0, P0) then print (p, q) else return end; If (area (p, next [p], next [Q]) = Area (p, next [p], q) then if (p, q )! = (Q0, P0) then print (p, next [Q]) else print (next [p], q) endend. HerePrint (p, q)Indicates(P, q)A

polygon inYminpAndYmaxqConstruct two tangent linesLpAndSCSIPlace the corresponding polygon on their right side. In this caseLpAndSCSIHas different directions, andYminpAndYmaxqIt becomes a pair of vertex points between polygon. Calculation distance (Yminp,YmaxqAnd maintain it as the current maximum value. Rotate parallel lines clockwise at the same time until one of them overlaps with the edges of the polygon. A new pair of vertex points is generated. Calculate the new distance, which i

How to improve the anti-jamming of single-chip microcomputer to make you less detours have made the product of friends have experience, a design seemingly simple, hardware design and code writing quickly done, but in the debugging process but more or less accidents, these are anti-jamming ability is not enough embodiment. Let's discuss how to make your design avoid detours: anti-interference embodied in 2 a

obtained by calculating the convex hull. As Robert and Toussaint explained, fortunately, these convex packets do not need to be completely re-computed every time: they need to be updated. In fact, consider two approaching directions: Many (or all) polygon have the same top and bottom vertices for both directions. This result also implies that only the limited direction (when the current vertex or the top vertex changes) needs to be detected. The focus here is on the rotating

How to crack the mobile phone shielding device/signal jamming device I believe that students in the past few years know what it is and the most common radio interference equipment in the test room. The main cause is to interfere with the cell phone signal in the nearby area and cause the cell phone signal to lose connection with the base station.Interference principle Within a certain frequency range, mobile phones and base stations are connected by

will have a second time complexity. A more efficient algorithm has been found. Using the rotating jamming case, we can update the data in real time within the constant time, instead of re-calculating the endpoint.In fact, considering a convex polygon, there are two pairs andXAndYTangent tangent to the last four endpoints. The four lines have determined the external rectangle of a polygon. However, unless a polygon has a horizontal or vertical edge, t

Reprint please indicate the source, thank you http://blog.csdn.net/ACM_cxlove? Viewmode = ContentsBy --- cxlove Question: Find the maximum diameter of the convex hull. Http://poj.org/problem? Id = 2187 First, evaluate the convex hull of a polygon. Then, the maximum diameter is obtained by rotating the jamming case. In fact, two parallel lines are clamped out of the convex hull and rotated. If Pa and Pb are the farthest points, then the parallel line o

Link: http://poj.org/problem? Id = 2079 triangle Time limit:3000 Ms Memory limit:30000 K Total submissions:8173 Accepted:2423 DescriptionGiven n distinct points on a plane, your task is to find the triangle that have the maximum area, whose vertices are from the given points. InputThe input consists of several test cases. the first line of each test case contains an integer N, indicating the number of points on the plane. each of the following n lines contai

people. (Of course you have to be decisive)Soso said a sentence is very important: pain on the pain, the long-term plan behind is the most important.2. Second, you also have to understand others (others also want to find something self and entertainment)If the sound is loud, you can wear a headset, or politely tell him what to do right now. After all, they understand each other under the same roof.3. The following is the most important, call your consciousness, pay attention to one thing, other

calculation. Width of a convex polygon. The diameter pair is shown in the black spots that pass by the parallel tangent (red line. The diameter is shown in the highlighted light blue line. A problem that is very similar to the calculation diameterAlgorithmYou can obtain the vertex-edge and edge-edge pairs by traversing the polygon pair list to calculate the width. The selection process is as follows: Calculate a polygonYThe endpoint in the direction. We call itYminAndYmax. Pass

Wireless electronic jamming device-no damage to the car lock, magic car theft technology-Central 2 Life Channel live broadcast Two people cooperated in committing the crime.When the car owner locks the car, enable the wireless electronic interference meter to invalidate the car owner's lock action.Then one person tracks the car owner to prevent him from returning suddenly;Another person uses a fake car key to open a car that is not locked at all. I

This is the shortest distance between the two convex packets, In fact, you only need to find "the current vector area is not smaller than the next vector area, If this condition is met, the current two ymin and Ymax vertices are the opposite vertices. The Code is as follows. For more information, see: # Include Rotating jamming solution poj3608bridge sans SS islands

Who is the first killer of wireless networks? The answer is, of course, "wireless jamming." So when you face the ubiquitous annoying killer, can you handle it calmly? Do you have the right approach? In the face of the internet circulated about the "killer" all kinds of rumors, what is true, which is false? This article will be with you to find out about the wireless interference of the five wrong statements. Error statement one: Deploying