求翻译：2.跳频在紧密频率复用的系统里，为了降低干扰，可以采用基带跳频或射频跳频 跳频是通过频率分集和干扰分集来获得跳频增益，相对提高了系统的信噪比。是什么意思？

2 hopping in close frequency reuse system, in order to reduce interference, you can use the baseband frequency hopping or frequency hopping hopping hopping frequency diversity and interference diversity gain, the relative SNR of the system .

2.Close frequency hopping in the system, in order to reduce interference, you can use base-band frequency hopping or RF frequency hopping frequency hopping is by frequency interference with sub-sub-sets, and set to get hopping gain, the relative increase in system signal to noise ratio.

2. frequencies-hopping in close channeling system, in order to reduce the disturbance, may use the baseband frequency-hopping or the radio frequency frequency-hopping frequency-hopping is obtains the frequency-hopping through the frequency diversity and the disturbance diversity to increase, enhance

2. frequency hopping in close frequency reuse systems, in order to reduce the interference, use either the baseband frequency hopping or RF FH FH is obtained through frequency diversity and interference set to hopping gain, increase the signal-to-noise ratio of the system.