CN202870293U - Single-board multi-channel signal source generating device - Google Patents

Abstract

The utility model relates to the field of radar signal source generating devices and discloses a single-board multi-channel signal source generating device. The single-board multi-channel signal source generating device comprises an SDRAM memory module, D/A output modules, an FPGA control module and a power module, wherein the SDRAM memory module, the D/A output modules and the power module are electrically connected with the FPGA control module, and the FPGA control module is connected with the SDRAM memory module through a CPCI bus. The single-board multi-channel signal source generating device has the advantage that a signal source can be easily modified to meet requirements of performance evaluation and field debugging of a radar timely and flexibly according to the demand, and the signal source adopts a multi-channel mode so that complexity and cost of a testing system can be greatly reduced.

Description

Veneer multi channel signals source produces system

Technical field

The utility model relates to radar signal source generating device field, relates in particular to a kind of veneer multi channel signals source and produces system.

Background technology

Radar Signal Generator early is that the mimic channel by complexity consists of mostly, and volume is large, the high and easy care not of cost.Traditional product level signal source often can only produce single signal, and can't add the distinctive signal of actual needs, does not satisfy development in science and technology and the actual needs that detect.Along with modern science and technology development at a high speed, especially in complicated space environment test, all kinds of novel radar signal systems are various, electromagnetic environment is complicated, need signal source can produce different types of and the adjustable signal of parameter, also can upgrading frequently and unavailable along with product of synchronous signal source causes cost to increase substantially.In addition, what the signal source on the market adopted all is the veneer single channel basically, has the less problem of signal source passage.

Summary of the invention

The purpose of the utility model embodiment is: provide a kind of veneer multi channel signals source to produce system, having signal source easily revises, simultaneously according to demand, in time and flexibly satisfy Performance Evaluation and the field adjustable of radar, and what signal source adopted is the veneer multi-channel mode, greatly reduces complicacy and the cost of pilot system.

A kind of veneer multi channel signals source that the utility model embodiment provides produces system, comprising:

The SDRAM memory module is used for the storage emulation Wave data of synchronous dynamic;

The D/A output module is finished D/A conversion, filtering and amplifieroperation, so that the signal source of output meets demand;

The FPGA control module, be control center, radar signal simulation data by the generation of radar simulation principle, and described emulated data is transferred to described SDRAM memory module storage, finish the input and output control to described SDRAM memory module, and the control of the kind of the signal source output of described D/A output module, frequency and amplitude;

Power module is whole device power supply;

Described SDRAM memory module, D/A output module, power module link to each other with described FPGA control module electricity respectively.

Optionally, described FPGA control module links to each other with described SDRAM memory module by cpci bus.

Therefore the technical scheme of application the utility model embodiment adopts field programmable gate array FPGA control module, can generate the radar signal simulation data according to the radar simulation principle, then is sent to described SDRAM memory module and stores.In the utilization process, required according to reality, by the scheduling of described FPGA control module to described SDRAM memory module, export the Wave data of corresponding kind, frequency, amplitude, then by described D/A output module described Wave data is carried out D/A conversion, filtering and amplification, i.e. the required signal of exportable satisfied reality.Veneer multi channel signals described in the utility model source produces system, owing to adopted the FPGA control module of programmable gate array, not only can generate the radar simulation data according to the radar simulation principle, can also carry out adaptive change to the product with the matching used upgrading of signal source, not only provide cost savings, also greatly improved real-time and dirigibility.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of to improper restriction of the present utility model, in the accompanying drawings:

A kind of veneer multi channel signals source that Fig. 1 provides for the utility model embodiment 1 produces the structural principle block diagram of system.

Embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to restriction of the present utility model.

Embodiment 1:

As shown in Figure 1, veneer multi channel signals source shown in the utility model produces system, comprise SDRAM memory module 1, D/A output module 2, FPGA control module 3, power module 4, described SDRAM memory module 1, D/A output module 2, power module 4 link to each other with described FPGA control module 3 electricity respectively, and described FPGA control module 3 links to each other with described SDRAM memory module 1 by cpci bus.

Described SDRAM memory module 1, Synchronous Dynamic Random Access Memory, synchronous dynamic is storer immediately, refers to synchronously Memory need of work synchronous clock, and the transmission of inner order and data transfer are all take it as benchmark; Refer to that dynamically storage array need to refresh constantly to guarantee that data do not lose; Refer to that at random data are not that linearity is stored successively, but free assigned address carries out reading and writing data.Described SDRAM memory module 1 also namely is used for the radar signal simulation data that the storage of synchronous dynamic generates by the radar simulation principle by described FPGA control module 3.

Described D/A output module 2 is finished from described SDRAM memory module 1 D/A conversion, filtering and the amplifieroperation of certain radar signal simulation data of output, so that the signal source of output meets demand;

Described FPGA control module 3, be control center, radar signal simulation data by the generation of radar simulation principle, and described emulated data is transferred to described SDRAM memory module 1 storage, finish the input and output control to described SDRAM memory module 1, and the control of output signal kind, frequency and the amplitude of described D/A output module 2, thereby orderly, flexible, the real-time radar signal of calling realistic requirement.Because the capacity of described emulated data is larger, described FPGA control module 3 transfers to described SDPAM memory module 1 by cpci bus and stores.

Described power module 4 is the module for power supply in the whole device.

As can be seen from Figure 1, the number of described SDRAM memory module 1 and D/A output module 2 is decided according to reality is required, if capacity is large, the SDRAM memory module 1 that then requires and D/A output module 2 be just corresponding increase also, the described SDRAM memory module 1 that is not limited among the figure is two, and described D/A output module 2 is four.

More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, all will change on embodiment and range of application, in sum, this description should not be construed as restriction of the present utility model.

Claims (2)

1. a veneer multi channel signals source produces system, it is characterized in that, comprising:

The SDRAM memory module is used for the storage emulation Wave data of synchronous dynamic;

The D/A output module is finished D/A conversion, filtering and amplifieroperation, so that the signal source of output meets demand;

The FPGA control module, be control center, radar signal simulation data by the generation of radar simulation principle, and described emulated data is transferred to described SDRAM memory module storage, finish the input and output control to described SDRAM memory module, and the control of the kind of the signal source output of described D/A output module, frequency and amplitude;

Power module is whole device power supply;

Described SDRAM memory module, D/A output module, power module link to each other with described FPGA control module electricity respectively.

2. veneer multi channel signals according to claim 1 source produces system, it is characterized in that:

Described FPGA control module links to each other with described SDRAM memory module by cpci bus.

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