If the antenna beam continuously rotates for tracking a target, then it is called conical scanning. This chapter describes the conicalscan, sequentiallobing, and monopulse. Distinguish between sequential lobing and conical scan. Theory of conicalscan radars for lowangle tracking dtic. In this video, i have explained sequential lobing in radar tracking with following aspects. Sequential lobing conical scan simultaneous lobing or monopulse.
The centre point of where the two lobes overlap represents the boresight of the antenna and this is the tracking box that the radar antenna is maintaining. Sequential lobing, radar tracking in microwave and radar. Difference between sequential lobing and conical scan. Draw the block diagram of a pulsed radar and explain its operation 2. Some older target tracking radars use the conical scan to determine the exact target direction. You can generate a conical scan pattern, as shown in figure 1, by using a rotating feed driven by a motor in the housing at the rear of the dish.
At the conical scan the antenna traces a cone pattern around its central axis. The angular accuracy can be much higher than the antenna beamwidth. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Following figure shows an example of conical scanning. Angle tracking conical scan, sequential lobing, low.
A tracking radar n t e n a t i h i e s o t r y d e s i g n. Conical scanning, radar tracking in microwave and radar. To track a target in one axis, two lobes are required. Conical scan conical scan is a logical extension of sequential lobing where. Conical scan is a logical extension of sequential lobing where, in this case, the antenna is continuously rotated at an offset angle, or has a feed that is rotated. The range and doppler frequency shift can also be continuously tracked, if desired. Sequential lobing radars represent a very old form of radar technology and are not likely to be encountered in practice. In this video, i have explained conical scanning in radar tracking with following aspects. Conical scan modulation is used to find the position of the target. In, it is explained that in terms of angle error, two techniques of sequential lobing and conical scan are similar to each other. Error signal produced when the target is on the tracking axis for conical scan.
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