移动自组织网络路由协议多是基于双向链路提出，而单向链路在战场环境下普遍存在，严重影响着网络性能。

Mobile AD hoc routing protocols are designed based on bidirectional links, but there are many unidirectional links in battlefield environment, and they have bad effect on the routing protocols.

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首先，通过双星定位系统双向链路获取定时定位信息，将双向测距数据及时问同步误差数据进行处理、保存；

At first, synchronization information from the Tow_stay located system, disposes and saves the data of synchronization time and distance detacted.

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如果找到的路由不是纯双向链路，则源节点还需要将RACK报文沿找到的回路路由循环一次，通过RACK的传播来通知中间节点建立起相应的路由。

If it is not a pure two-way path which includes some asymmetric links, the source needs to spread the RACK along the route and inform the route-related nodes to establish the corresponding route.

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