Sequential lobing. by de-interleaving the incident pulse train (3) (7) (8). An equivalence will be demonstrated, which will allow us to formulate the problem of modelling conical-scan radars in terms of an equivalent monopulse radar. Find the distance in yards to an object if the display of a radar signal measures 4.4 microseconds. In a conical scan tracker, the missile’s instantaneous field of view rotates around the target so that target is always at the center of the rotating “beam” pattern and the radiation from … 21. IAM incidental amplitude modulation . Draw and explain about simple CW radar 2. Concept of the conical scan. Write briefly about monopulse tracking radar PART B 1. Explain in detail about FM CW radar with a block diagram 3. The TWS system is capable of automatically tracking many targets simultaneously. What is in the brightest regions in visible, IR, and water vapor images, respectively (slide 11)? 328 . 3. (slide 55, please review the NCAR COMET lecture online) 8. 1. A problem within satellite tracking mounts is keyhole effect, which occurs when the mount is required to track a satellite at an elevation angles approaching 90 degrees from its base (referred to as looking up). (a) Target is located on track axis. Using a conical scan design, the GMI main reflector has a rotation rate of 32 rpm, 110 scanning a 140° sector centered on the spacecraft ground track with an altitude of about 407 km. In order to observe a raining area without making any gaps between adjacent swaths, a satellite must move the same distance as the along track resolution rl while the antenna beam goes round a circle with the period T. This condition c. 722 . These parameters, also known as emitter descriptors, are used to track the detected radar in time. (b) Target is off track axis. The radar beam is rotated in a small circle around the "boresight" axis, which is pointed at the target. This results in a blind region where the antenna is unable to see the satellite. This approach is adopted simply because of the difficulty of developing a theoretical model of a conical-scan … 109 snowfall. ID identification Conical scanning in Infrared guided missiles is very similar to conical scanning of radar. 9. Conical scanning is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Telemetry (TM) Systems Radio Frequency (RF) Handbook, RCC Document 120-08, March 2008 Hz Hertz . 111 This scan configuration gives a cross-track swath covering … 380 . a. velocity of the conical scan are given by 0 and , respectively. Differences among conical scan, cross-track scan, and pushbroom scan. 7. What is conical scanning 24. Conical scanning concept. The envelope detec-tor is used to extract the return signal amplitude and the Automatic Gain Con-trol (AGC) tries to hold the receiver output to a constant value. Since the AGC Furthermore, the TWS system can also perform a variety of other automated functions, such as collision or close CPA warnings. d. 656 Distinguish between a continuous tracking radar and track while scan radar 22. Define squist angle 25. Interpreting visible, IR, and water vapor images (slide 5-11). What is meant by sequential lobing 23. b. Conical Scan fig shows a simplified conical scan radar system. conical-scan radars. fixed, conical scan etc.) Fig. Figure . The track-while-scan (TWS) system maintains the search function, while a computer performs the tracking functions.
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