激光传输系统的误码测试

本文所介绍的误码测试系统,采用收、发两端同时记录被传输信息,然后逐位比较求出误码率及误码分布的测试方法。系统采用外同步通讯控制方式,并由外同步信号整步内同步信号。当激光传输信道瞬间受阻而外同步信号消失时,由内同步信号控制对数据的接收,从而保证在整个信息传输过程中,接收端准确、可靠地记录全部被传输信息。该测试系统主要由两台TP-801B型微机组成,可适用于五种速率,具有10~(-6)的测试精度,存贮信息容量为22.5K字节,除提供误码率及误码分布外,还可提供全部被测数据及全部误码数据。该系统已成功地应用于激光制导系统的误码测试。

ERROR-CODE TEST SYSTEM OF LASER-BEAM TRANSMISSION

This paper introduces a Error-code ratio test system. It employs transfer message simultaneously recorded at the receive-and dispatch ends, and the method that error-code ratio and error-code distribution are found out by one to one bit compare. The system uses external synchroneous communication control method and adjusts internal synchroneous sign by external synehroneous sign. when laser-beam channel is instantaneously blocked and external sign disappears, the date will be received by internal synchroneous sign control so as to ensure that the receive end can accurately and steady record all transmitted messages in the transmission process. The system consists of two units of TP-801B single board computers, is available for five rates, of test precision up to 10~(-6) and storage message capacity of 22.5 k-characters. In addition to error-code ratio and distribution, the system provides all tested and error-code date. It has been successfully used in laser-beam riding system