2. Equation (16-16) is reasonably accurate in predicting maximum range, provided that a number of factors are taken into account when it is used. While ground range is the horizontal distance between the emitter and its target and its calculation requires knowledge of the target's elevation. The frequencies of radar sets today range from about 5 megahertz to about 130 gigahertz (130,000,000,000 oscillations per second!). The speed guns employ the use of LiDAR technology to determine accurately the speed of approaching vehicles. Referenzen: Merrill I. Skolnik: ''Introduction to Radar Systems'' McGraw-Hill Europe, 2001, ISBN 007-118189-x , S. 317, Topic 6.3 … However, certain frequencies are also preferred for certain radar applications. Slant range is the line of sight distance between the radar and the object illuminated. Experts opine that Laser systems are more accurate when it comes to providing traffic and speed analysis as compared to other systems including radar. radar range equation represents the physical dependences of the transmit power, which is the wave propagation up to the receiving of the echo signals. 4. Resolution is the ability of a radar to resolve (recognise) two closely spaced objects. The accuracy depends on the type of antenna, whether it is primary or secondary radar, and the distance of the aircraft from the radar head. CHAPTER 18. Ducts can sometimes extend the range of an airborne radar, but on other occasions they may cause the radar energy to be diverted and not illuminate regions below the ducts. The actual range of a target from the radar is known as slant range. Radar Performance Factors: Quite apart from being limited by the curvature of the earth, the maximum range of a radar Set depends on a number of other Radar Performance Factors.

Very long-range radar systems usually operate at lower frequencies below and including the D-band. You might have many different reasons for getting out of the speeding ticket.

The accuracy depends on the type of antenna, whether it is primary or secondary radar, and the distance of the aircraft from the radar head. These can now be discussed, beginning with the classical radar range equation. And RADAR having a longer range and performing better in dust and smokey conditions. A better understanding of the accuracy of LiDAR is perhaps best described on the speed guns often used by cops. However, at the lower frequencies (below several hundred megahertz), radar energy can penetrate into the ground and be reflected from buried objects.

Previously, radar was used to acquire these speeds but the accuracy of the system was always in doubt. The Radar Range Equation. Ground-probing radar Radar waves are usually thought of as being reflected from the surface of the ground.

However, atmospheric circumstances can degrade these figures, especially at long range. The across beam accuracy is … POMR-720001 book ISBN:9781891121524 February 9, 2010 16:55 2. I gave the generic answer about LIDAR having higher resolution and accuracy than RADAR. Radar Measurements The basic radar range, angle, and radial velocity measurements previously discussed

Multiple echoes: Multiple echoes occur as a result of several reverberations of the echoes from a different ship and from own ship multiple times.The display screen may show more than two or three objects being detected. LIDAR vs RADAR: A Detailed Comparison. A laser beam is a mere 18 inches wide at 500 feet compared to a radar beam’s width of some 150 feet.