CN203376474U

CN203376474U - A radar data processing system

Info

Publication number: CN203376474U
Application number: CN201320420383.9U
Authority: CN
Inventors: 李周平
Original assignee: SHAANXI XINGYUAN ELECTRONIC EQUIPMENT Co Ltd
Current assignee: Shaanxi Xing Yuan Royal Weather Polytron Technologies Inc
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2014-01-01
Anticipated expiration: 2023-07-15

Abstract

The utility model relates to a radar data processing system comprising a receiver and an acquisition card connected with the receiver. The acquisition card is connected with a FPGA data processing module. The FPGA data processing module is connected with a DSP chip. The DSP chip is connected with a computer. The radar data processing system has advantage that by replacing the operation of a part of software with hardware, the operational burden of system software is relieved; data processing speed is accelerated; a requirement of the computer is decreased; and production cost is decreased, and that radar data processing is more accurate, faster, and higher real-time.

Description

A kind of radar data processing system

Technical field

The utility model relates to a kind of radar data processing system.

Background technology

At present, it is that the vision signal of receiver output is transformed into to digital signal, then data is sampled, corrects, accumulated through the large dynamically A/D of high speed that radar data is processed, and demonstrates radar echo map.The collection of general radar, correct, data are processed, show and all completed by computer software.The original speed of processing of software is slower, and the speed of perform statement is at Millisecond, and software will carry out the demonstration of figure, the operand that causes like this software to process is very large, and real-time is not high, even causes that system is unstable, collapse, simultaneously very high to the requirement of computing machine, production cost is also corresponding higher.

The utility model content

For above-mentioned deficiency, it is fast that the purpose of this utility model is to provide a kind of data processing speed, the radar data processing system that production cost is low.

The technical solution of the utility model is achieved in that a kind of radar data processing system, comprise receiver and connected capture card, be connected with the FPGA data processing module on described capture card, be connected with dsp chip on described FPGA data processing module, described dsp chip is connected with computing machine.

Further, described capture card is provided with A/D modular converter and D/A modular converter.

Further, between described receiver and capture card, by vision cable, be connected, the impedance of this vision cable is 50 Ω.

Compared with prior art, the beneficial effects of the utility model are: after adopting said structure, carry out the work of Substitute For Partial software by hardware, the burden of mitigation system software computing, accelerated data processing speed, reduced the requirement to computing machine, reduced production cost, radar data processing simultaneously is more accurate, and speed is faster, and real-time is higher.

The accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment technical scheme, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only that this practicality is in order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.

A kind of radar data processing system as shown in Figure 1, comprise receiver 1 and connected capture card 2, between described receiver 1 and capture card 2, by vision cable, is connected, and the impedance of this vision cable is 50 Ω; Capture card 2 is provided with A/D modular converter 21 and D/A modular converter 22, on described capture card 2, is connected with FPGA data processing module 3, on described FPGA data processing module 3, is connected with dsp chip 4, and described dsp chip 4 is connected with computing machine 5.Receiver 1 receives simulating signal pass to capture card 2 like this, in the middle of receiver 1 and capture card 2, by vision cable, transmit, capture card 2 receives signal, be converted into digital signal by the chip dies analog signal and pass to FPGA data processing module 3, data of FPGA data processing module 3 each receptions are just processed in conjunction with DSP.Then after processing, data send to computing machine 5 by netting twine, and computing machine 5 directly shows the data of receiving.The collection of most like this signal, correct, accumulate, processed hardware and process, software only is responsible for demonstration.Make the radar data processing speed faster, more accurately, real-time is higher.

In use, receiver 1 is passed to capture card 2 by the simulating signal of 3M, and the signal of transmission 3M is that low frequency signal is decayed little many on the line than high-frequency signal in order to reduce signal decay on the line, guarantees completing property, the accuracy of signal.The vision cable transmission that is 50M with impedance in the middle of receiver 1 and capture card 2, capture card 2 receives signal, by A/D modular converter 21, analog signal conversion is become to digital signal, and the A/D modular converter 21 of choosing 12MHz is sampled, the data of sampling are passed to FPGA data processing module 3, FPGA data processing module 3 and dsp chip 4 cooperatively interact, FPGA data processing module 3 carries out the collection of data, accumulation, dsp chip 4 is by the data of these collections, in conjunction with corresponding algorithm, processed, FPGA data processing module 3 produces repetition frequency, try to achieve the fuzzy distance of radar in dsp chip 4, calculate the range resolution of radar by pulse width simultaneously, by calculating the resolution of A/D modular converter 21 data, the reality of i.e. A/D modular converter 21 data representatives.

Propagate in atmosphere due to electromagnetic wave and can decay rapidly with the increase of distance, the object difference of while because surveying, attenuation degree is also different, therefore must carry out distance corrects, distance is corrected special formula, because formula divides complexity, operand is very large, owing to being subject to computing machine 5 processing poweies and the restriction programming software computing, the easy algorithm of processing use in software originally, now this part is operated in dsp chip 4 and completes, dsp chip 4 is to be used for specially carrying out the data algorithm processing, arithmetic speed is very fast, and precision is very high, improve the accuracy of radar data.

Just can be accumulated computing through the data of correcting, the enough certain umber of pulses of accumulation, its operational formula is after the echo data addition of the same distance unit in these umber of pulses, to average, and one group of Data Update of every sampling once, once accumulates computing simultaneously.

Data after accumulation are added to the status information of radar, by network interface, be transferred to computing machine 5, computing machine 5 is received these packets, and then according to data value, corresponding corresponding color, directly show.Reduced the treatment capacity of computing machine 5, and the difficulty of writing of software has been reduced, more easily realized.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a radar data processing system, it is characterized in that: comprise receiver (1) and connected capture card (2), be connected with FPGA data processing module (3) on described capture card (2), be connected with dsp chip (4) on described FPGA data processing module (3), described dsp chip (4) is connected with computing machine (5).

2. a kind of radar data processing system according to claim 1, it is characterized in that: described capture card (2) is provided with A/D modular converter (21) and D/A modular converter (22).

3. a kind of radar data processing system according to claim 1 is characterized in that: between described receiver (1) and capture card (2), by vision cable, be connected, the impedance of this vision cable is 50 Ω.