YLC-6M “2D radar” radar reflector antennas can achieve the best electrical performances ever, such as low sidelobe “peak sidelobe level less than or equal to -30dB, mean sidelobe level less than or equal to -40dB”, higher gain, lighter weight and adaptability to the right environment “no dew effects like flat array radome”. Furthermore, it can provide a high efficiency/full cycle cost ratio.

On the YLC-6M radar, it is assembled together from three blocks. In the shipping state, the middle block rests on the roof of the transmitter cabinet, when the two edge blocks are disassembled with one on each side of the transmitter cabinet. However, it is ensured that the radar system cannot go beyond the transport height limit when it is transported. The use of Quincunx Hollow reflector antenna can not only meet the hyperboloid accuracy requirements; however, it can reduce weight and lower wind resistance to allow the radar to work in the harshest environment. No need to pack the Radome in the reflector antenna; consequently, environmental factors, such as temperature, humidity, etc.

The YLC-6M radar is a low/medium altitude 2D radar system. In the design of the beam, the low-altitude performance of the radar is taken into account, as well as the ability to reject ground clutter; therefore, a combination of high and low beams is used:
– The low beam is a common beam for both transmitting and receiving. Its elevation is 2.7 degrees, plus, used for long-range target detection.

– The high beam is a light for receiving only. Its elevation is 7 degrees. It can be used to reject strong floor clutter effectively! It is typically used for short-range target detection or just overhead target detection.

The YLC-6M radar is a highly mobile medium/low altitude surveillance radar with different operating ranges; thus, it can detect short-range air targets. Therefore, several signals are designed, among which the signal with a pulse duration of 100 ms (microsecond) is used for long-range target detection. However, it may result in the corresponding short range blind area. Consequently, an additional carrier frequency signal with a pulse duration of 0.8 ms is transmitted within each PRI (Primary Rate Interface) for range blind area compensation. The signal with a pulse duration of 100 ms is a non-linear FM rectangular pulse signal. Its echo is compressed into a 0.8 ms signal by a digital matching filter, so that both radar detection coverage and high range resolution can be achieved without using higher transmitted power. The use of a lower radar transmission power allows not only the decrease in the probability of radar interception, but also the increase in the anti-reconnaissance capability of the radar. It also provides the conditions for the modular design of solid-state radar transmitters.

END OF PART II