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The smaller the angle of the beam, the farther the radar can see the target and the more precisely the angle of the target can be known. If the time delays are not exaggerated, an operator may not detect the loss of range lock-on until after a missile has been fired. A PPI display with planes and jamming image is 35 K bytes. It raises the gain in the velocity tracking bins, thinking that the signal with the highest amplitude is the target. This is known as range gate capture. Basically, you and the radar set are in the middle of this big round map, and the radar us showing you what is going on around you. Say equipment malfunction, including having Foe bullets through your IFF transponder receiver and transmitter??

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This is actually rather tricky, as the transmitter sends a pulse of energy to the antenna sufficient to cook or spark most receiving components, then with in a few micro seconds, the transmitter must be electrically disconnected from the antenna firce the receiver connected.

A bit like the differences in repairing two different brands of automobiles or washing elra-8560. Skirt jamming and image jamming have had limited success. This limits some of the undesirable electrical modes possible in circular cross section wave guides. This jamming pulse will generate a false error signal and drive the antenna away from the true target return.

Some of the wave may hit an object and be reflected back as an echo. This technique does not require a large amount of power, just enough to cover the radar return of the aircraft. Click on that - fill out the blanks, and you get to see the saved presentation.

During the s, a "traveling wave" tube was developed which could be made to have even lower noise than the crystal mixer. The tube the Nike Ajax Tracking Radars developed about 8 years later was a metal box about 1 inch x 1 inch x 0. Unlike human shouting, which spreads all over the place, omi-directional ;-there is a big attempt to build antennas to get most all the power of radar transmitter directed in a narrow beam, like a search light, or a narrow fan.

But oddly enough, there is no big problem. If the target was moving the echoes from successive pulses tended to be different. The poor fellow likely would have made an adequate Warrant Officer - but a rather hopeless commissioned officer. One side of the cathode is at minus 12KV; the other side is at a lower potential because of the drop across the cathode itself. To be effective, deception jamming systems must be programmed with detailed and exact signal parameters for each lethal threat.

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For an air-to-air missile, the terrain bounce technique should be activated at long range. As a rule, the jamming signal must be 25 to 30 dBs stronger than the target return to exploit the tracking errors in the cross-polarized antenna pattern. To be effective, a deception jammer receives the victim radar signal, modifies this signal, and retransmits this altered signal back to the victim eltz-8560. This type of jamming occurs when aircraft do not wish to be observed or may wish to reduce the effectiveness of the radar attempting to track it.

However, the deception jammer does not have to replicate the power of the victim radar system. The range gate is used as the primary gate for target selection. This may require exploitation of the monopulse threat system. Microwave Oven Magnetron You may note that your home microwave oven is "instant on" - no waiting for minutes for the cathode temperature to stabilize - This type of magnetron uses an undesired effect in the hot cathode high powered magnetrons called "Secondary Emission" eltaa-8560 adds undesired heat to the cathodes of hot cathode magnetrons.

For example, if a particular radar system relies primarily on Doppler tracking, a Doppler deception technique will greatly reduce dheel effectiveness.

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By increasing these time delays, the range gate will detect an increase in range and automatically move off to a false range. During the early 60s the control was modified to electromechanical. The IFF sent a pulse out a few microseconds after the radar. The big difference is the front end where the incoming frequency is much higher.

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Examples are the jeweler's use the "carat" for weight and American's use of the old "English" system of measurements. With electronics, measurement of the echo time to with in 5 meters whrel no technical challenge. The Sensitivity Time Control STC reduced the gain of the receiver at close ranges so that all return signals will have a more nearly equal intensity.

Now, with Wikipedia, much more history of the magnetron is widely available. A book recommended by Aidan Fabius via newsgroup sci. Target selection is done by using gate bins. It was his job to determine the type of ECM that was being used against the radar and to counter the effects of the jamming.