Modularization phase coherent multichannel signal generating device based on PXI bus

Abstract

A modularization phase coherent multichannel signal generating device based on PXI bus, relates to the measuring and testing technique field. A main control computer is connected with the system bus through system interfaces; the system bus is respectively connected with a clock generating and distribution device, a local oscillation signal source and N vector modulation channels through signal wires; the clock generating and distribution device and the local oscillation signal source respectively provide clock signals to each other through two signal wires; the clock generating and distribution device respectively provides clock signals and trigger signals to N vector modulation channels, and provides externally a clock extension interface and a triggering extension interface, through 2N+2 signal wires; the local oscillation signal source is connected with a local oscillation power divider; the local oscillation power divider is connected with N vector modulation channels, and externally provides a channel extension interface, through N+1 signal wires; each vector modulation channel externally provides a coherent signal output interface. The invention has advantages of wide phase adjustment scope, small volume, light weight, high system flexibility and low cost.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a PXI bus-based modular phase coherent multi-channel signal generator. Background technique [0002] In the field of testing technology, multi-channel receiving equipment is the main equipment for electronic direction finding, and it is widely used in the fields of radio management, electromagnetic spectrum monitoring and radar passive positioning. The basic principle of multi-channel receiving equipment is to use multiple receiving channels to receive the radiation signal of the radiation source under test at the same time. By comparing the phase difference and amplitude difference between the radiation signals of each channel and performing corresponding processing, the radiation signal source of the radiation signal under test can be obtained. direction information. The amplitude ratio method includes amplitude ratio monopulse direction finding and multi-beam direction findin...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to meet the needs of on-site testing, which is not conducive to the promotion and application of large-scale

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