fmcw radar

1. Link: Http://poj.org/problem? Id = 1328 Http://bailian.openjudge.cn/practice/1328/ 2. content: Radar installation Time limit:1000 ms Memory limit:10000 K Total submissions:52833 Accepted:11891 DescriptionAssume the coasting is an infinite straight line. land is in one side of coasting, sea in the other. each small island is a point locating in the sea side. and any

Poj 1328 Radar Installation [greedy] [range selection problem], pojradar Radar Installation Time Limit:1000 MS Memory Limit:10000 K Total Submissions:54798 Accepted:12352 DescriptionAssume the coasting is an infinite straight line. land is in one side of coasting, sea in the other. each small island is a point locating in the sea side. and any

Radar installation Time limit:1000 ms Memory limit:10000 K Total submissions:50843 Accepted:11415 DescriptionAssume the coasting is an infinite straight line. land is in one side of coasting, sea in the other. each small island is a point locating in the sea side. and any radar installation, locating on the coasting, can only cover D distance, so an island in the sea c

There is a path, and the two sides can be imagined as Y = 0 and y = 1. Now we will give you a list of radar, where each radar is (x coordinate, Y coordinate, and radiation radius ). Ask if a car can pass this road. Code statement: 1 static class Radar { 2 double x; 3 double y; 4 double r; 5 public

Topic linksFor M radar, N cities, and the coordinates of each city, the M radar can only use K, and the minimum radius is obtained under the condition that the K radar surrounds all cities.First to find out the distance of each radar to all cities, and then the two-radius, if the distance is less than two points, add t

DescriptionAssume the coasting isAn infinite straight line. Land is inchOne side of coasting, seainchThe other. Each of small island isA point locatinginchThe sea side. and any radar installation, locating on the coasting, can only cover D distanceinchThe sea can be covered by a RADIUS installation,ifThe distance between them isAt the most D. We use Cartesian coordinate system, defining the coasting isThe x-axis. The sea side isAbove x-axis, and the l

Main topic:Suppose there is an infinitely long coastline with N islands above the coastline. There are radars on the coastline, each radar can detect a circle with a radius of R, and the island can be detected by radar only when the distance between an island and the radar is less than or equal to R. gives the coordinates of all islands and the radius of the

Unconsciously this spring festival has been over, sorry that the family did not have a network, not in time to send blessings to everyone, today back to Shenzhen, tomorrow will work, small partners are not like me? Today is about a lot of people have seen the animation, radar search friends, the principle is very simple, you read my analysis, it will feel very simple, international practice, no picture no truth, we first look at the effect of the pict

The main topic: There are N islands in the sea, now want to install radar on the coastline to detect these islands (the coastline is equivalent to the x axis, the island is above the x-axis), the radar detection range is a radius d circle, known N Island coordinates, ask you at least how much radar to detect all the islands If the entire island cannot be detected

With the development of technology and the reduction of cost, the field of robot, unmanned aerial vehicle and unmanned driving has become an important application field of LiDAR in the field of laser radar. There are many kinds of sensors in the field of robotics, including cameras, lidar, millimeter-wave radar, ultrasound, infrared and many other sensors. The features and advantages of each sensor are not

This article introduces the example of mini-program-developed restroom radar to share emergencies ~ Can't find the restroom? A blue ray in the sky? Hello ~~ Use the restroom radar ~~~. As a good landlord, I have not only written code, but even thought about ads. wow ~~~~ "The restroom is looking fast, and the arrangement is good ". I saw a "toilet radar" in the e

Original title: http://poj.org/problem?id=1328The topic gives the horizontal ordinate and radius d of N points (islands), requiring the smallest points (radars) to be found on the x-axis, centered on these points, with a radius of D, and containing all the islands.In the beginning, I would like to make a judgment on the possible location of each radar, use radar to "find" the island, but quickly veto, becau

Radar installation Time limit:1000 ms Memory limit:10000 K Total submissions:27114 Accepted:5912 Description Assume the coasting is an infinite straight line. land is in one side of coasting, sea in the other. each small island is a point locating in the sea side. and any radar installation, locating on the coasting, can only cover D distance, so an isla

DescriptionAssume the coasting is a infinite straight line. Side of coasting, sea in the other. Each of small island was a point locating in the sea side. and any radar installation, locating on the coasting, can only cover D-distance, so a island in the sea can is covered by A RADIUS installation, if the distance between them is at most d.We use Cartesian coordinate system, defining the coasting is the x-axis. The sea side is above x-axis, and the la

FromCSKLow-cost 3D compaction. Very impressive! Before introducing the principles, we will first give you some 3D models and demonstration videos after scanning, so as to give you an intuitive understanding. Video LinkRelated Images: Corner of the scanned room (click to view original size) Scanned me (click to view original size) Scanner Structure Briefly introduces the current situation of LIDAR Products Principle of laser triangular ranging Principle of linear laser cross-section rangi

1193-radar Installation Time limit:3.000 seconds http://uva.onlinejudge.org/index.php?option=onlinejudgepage=show_problemproblem=3634 http://poj.org/problem?id=1328 Assume the coasting is a infinite straight line. Land are in one side of coasting, sea in the other. Each small island are a point locating the sea side. and any radar installation, locating on the coasting, can only cover d distance, so a i

Radar InstallationTime limit:1000msMemory limit:10000kTotal submissions:51377accepted:11527Idea: Each island has an interval on the x-axis that can be covered by radar, X1 to a covered left end, X2 to the right end of the overlay, and x1,x2 about the island's X symmetry.First sort the island by X, then greedy.The interval of the first island len[I].right with the subsequent islands and the interval len[K].l

http://poj.org/problem?id=1328First time: Starting from the first non-covered island on the left-->> failed because there is a y-coordinate. This factor cannot guarantee greedSecond time: Find two points to determine a circle----->>> It's long overdue to find that wrong is not universalFind the point of the first y-coordinate >= (if not found) from the first non-covered point on the left to the common circle of the two pointsIf you can't do either of these two points of the public circle or no y

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The IEEE Signal processing Magazine issued in March contains a paper "Radar Signal processing for elderly Fall Detection". This was probably the first survey paper of using radar techniques for human activity surveillance. The motivation of using radar for fall detection are that, the electromagnetic wave would have the so called Doppler effect Under Motions. Thr