Patent ID: 9602226
Date: 2017-03-21
CPC Classifications: G01R,H04B

Claim:
1. A distributed spectrum analyzer, comprising: a host; at least one radio frequency receiver; wherein the at least one radio frequency receiver is configured to receive a radio frequency signal, perform frequency conversion processing and Analog to Digital (AD) conversion on the radio frequency signal, and send an AD-converted digital signal to the host by a first digital optical module through an optical fiber; wherein the host further comprises a digital signal processing module and at least one second digital optical module, each of the at least one second digital optical module being configured to connect to one of the at least one radio frequency receiver through the optical fiber and receive the AD-converted digital signal sent by the at least one radio frequency receiver, and the digital signal processing module being configured to process the received AD-converted digital signal wherein the host further comprises: a master control module, configured to select a radio frequency receiver needed to be enabled according to a received operation instruction and transmit a corresponding control command and data information to the digital signal processing module; a clock, configured to output a clock signal; and an FPGA, connected to each of the at least one second digital optical module, respectively, and configured to transmit the control command and the data information forwarded by the digital signal processing module and the clock signal output by the clock to the at least one second digital optical module corresponding to the radio frequency receiver needed to be enabled, the at least one second digital optical module transmitting the digital optical signal including the clock signal, the control command and the data information to a corresponding radio frequency receiver through the optical fiber, and further configured to transmit the AD-converted digital signal forwarded by each of the at least one second digital optical module to the digital signal processing module for processing.