| 摘要 |
There is disclosed an arrangement for comparing two temporally separated bursts of signals at two different frequencies, particularly an interrogation pulse and a response pulse in a DME system, comprising a first frequency converter (CO1) receiving at the input said two bursts, and a comparing device (DC) electrically connected to the output of said first frequency converter (CO1). In order to obtain a reduction in the measurement errors, said first frequency converter (CO1) is designed to receive at the input said two bursts and to convert them into two new bursts at the same frequency so that the Comparing device (DC) carries out the comparison by operating at the same frequency. <IMAGE> |
