CN203720348U - Ka wave band radar wave measurement apparatus - Google Patents
Ka wave band radar wave measurement apparatus Download PDFInfo
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- CN203720348U CN203720348U CN201420021761.0U CN201420021761U CN203720348U CN 203720348 U CN203720348 U CN 203720348U CN 201420021761 U CN201420021761 U CN 201420021761U CN 203720348 U CN203720348 U CN 203720348U
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Abstract
The utility model discloses a Ka wave band radar wave measurement apparatus. The apparatus comprises an antenna, a circulator, a Ka wave band TR component and an integrated signal module. The antenna, the circulator, the Ka wave band TR component and the integrated signal module are successively linked. The apparatus is a linear frequency modulation system radar working in a Ka wave band and can extract a distance from the wave to a launching point, a distance change rate (a radial speed), a wave period and other information. The measurement apparatus of the utility model is suitable for various severe environments. Human intervention is not needed. Detection precision is high. The apparatus is stable and reliable and is light and handy in structure. The apparatus can be used for shore-based measurement and shipborne measurement and a suitable scope is wide.
Description
Technical field
The utility model discloses a kind of Ka band radar wave measurement device, be applied to the ocean dynamical environment parameter measurement of bank base or boat-carrying, relate to radargrammetry device technique field.
Background technology
At present varied for the device of wave measurement, it can be divided into two classes: contact type measurement and non-contact measurement.Contact type measurement is very high to the requirement of measurement environment, and measurement range is often also limited to very much, in extraordinary situation, needs personnel to intervene, and has promoted task difficulty.Non-contact measurement has become main flow in wave measurement, and radar remote sensing occupies majority in such device.Relatively such device, have be applicable on a large scale, the high-frequency ground wave radar of over the horizon, also have X-band Ocean Surveying radar.In prior art, all also have in measuring accuracy and the reliability of radar the possibility further improving.
Utility model content
Technical problem to be solved in the utility model is: for the defect of prior art, provide a kind of Ka band radar wave measurement device.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of Ka band radar wave measurement device, comprises antenna, circulator, Ka wave band TR assembly, integration signal module, described Ka wave band TR assembly comprises signal source, uppermixing filtering circuit, lower mixing and filtering circuit, filter amplification circuit, wherein, the first output terminal of signal source is connected with the first input end of integration signal module, the second output terminal of signal source is connected with the first input end of uppermixing filtering circuit, the output terminal of integration signal module is connected with the second input end of uppermixing filtering circuit, the output terminal of uppermixing filtering circuit is connected with circulator, circulator also respectively with antenna, the input end of lower mixing and filtering circuit is connected, the output terminal of lower mixing and filtering circuit is connected with the input end of filter amplification circuit, the output terminal of filter amplification circuit is connected with the second input end of integration signal module, signal source produces local oscillation signal and the coherent signal for integration signal module, integration signal module produces modulation signal according to coherent signal, described local oscillation signal and coherent signal combination, produce Ka band emission signal to circulator via uppermixing filtering circuit, circulator will transmit and receive signal and isolate, and described Ka band emission signal finally passes through antenna transmission, the radar echo signal of antenna reception is combined with transmitting leakage signal, produces baseband signal via lower mixing and filtering circuit, and described baseband signal after filtering amplifying circuit is sent to integration signal module.
As further preferred version of the present utility model, described integration signal module comprises fpga chip, clock distribution chip, DDS signal synthesis chip, ADC chip, data storage cell and communication unit; Described fpga chip is connected with clock distribution chip, DDS signal synthesis chip, ADC chip, data storage cell, communication unit respectively, and clock distribution chip is also connected with DDS signal synthesis chip, ADC chip respectively; Described clock distribution chip and ADC chip be first input end and second input end of corresponding integration signal module respectively, the output terminal of the corresponding integration signal module of DDS signal synthesis chip.
As further preferred version of the present utility model, described data storage cell is SD card or USB flash memory driver.
As further preferred version of the present utility model, described communication unit is GPRS module, ethernet module or RS232 interface.
The utility model adopts above technical scheme compared with prior art, has following technique effect: use the work of Ka wave band, greatly strengthened the antijamming capability of system, device be can be applicable under rugged surroundings.Antenna has adopted Miniaturization Design, and field angle is minimum, has greatly improved the reliability of data.In TR assembly, adopt zero intermediate frequency technology, reduced the complexity of system, increased the stability of system.Radar waveform of the present utility model design has adopted linear frequency modulation system, can extract wave to ocean dynamical environment information such as the distance of launching site, range rate (radial velocity), wave cycles from echo.
Brief description of the drawings
Fig. 1 is the module connection diagram of Ka band radar wave measurement device described in the utility model.
Fig. 2 is integration signal module diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
Ka band radar wave measurement device disclosed in the utility model has comprised integration signal module, Ka wave band TR assembly, circulator and antenna.Integration signal module is based on ultra large scale FPGA chip design, and its function mainly contains that modulation signal is synthetic, signal quantization and digital signal processing, data storage and communicate by letter; Its function of Ka wave band TR assembly mainly contains and produces local oscillation signal signal, the reference clock signal that produces the use of integration signal module, uppermixing amplification filtering, lower mixing amplification filtering etc.; Circulator is for launching and the isolation that receives signal; Antenna is for transmitting and the reception of Ka band signal.Above-mentioned device is the integrated signaling module of link order, Ka wave band TR assembly, circulator and antenna successively.
As shown in Figure 1, Ka wave band TR assembly has mainly comprised signal source, uppermixing filtering circuit, lower mixing and filtering circuit, filter amplification circuit.Wherein signal source produces the local oscillation signal of coherent and the coherent signal that integration signal module is used.The modulation signal that local oscillation signal and signaling module produce produces Ka band signal to circulator through uppermixing filter amplification circuit, finally goes out by antenna transmission.Radar echo signal through antenna reception, produces baseband signal with transmitting leakage signal to the mixed filtering circuit of putting, by amplifying circuit to signaling module.In design, descender has adopted zero intermediate frequency technology, reduces the complicacy of circuit, has improved reliability.
As Fig. 2, integration signal module has mainly comprised fpga chip, clock distribution chip, DDS signal synthesis chip, ADC chip, data poke unit and communication unit.Coherent clock is produced by Ka wave band TR assembly, all signal coherents in this clock and TR assembly, and clock supplies respectively fpga chip, DDS signal synthesis chip and ADC chip as work clock by clock distribution chip, has ensured the coherent of system.DDS signal synthesis chip is configured by SPI by fpga chip, produces FM signal to TR assembly.In ADC chip, AFE (analog front end) has comprised wave filter, pre-low-noise amplifier, controllable gain amplifier, frequency overlapped-resistable filter and 16 ADC, and quantized data is delivered to FPGA.FPGA can, according to stock assessment and functional requirement, choose applicable chip.This chip adopts the signal of clock distribution chip output as global clock, can configure in real time DDS output waveform.Comprise 2 grades of filtering extractions, FFT and embedded each ocean environment parameter algorithm for the processing of baseband signal, can calculate voluntarily needed parameter.Result data can pass through cell stores, also can be sent to host computer by communication unit.Storage unit design is compatible memory devices such as SD card, USB flash disk, communication unit design is compatible GPRS, gigabit Ethernet, RS232 etc.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.
Claims (4)
1. a Ka band radar wave measurement device, is characterized in that: comprise antenna, circulator, Ka wave band TR assembly, integration signal module; Described Ka wave band TR assembly comprises signal source, uppermixing filtering circuit, lower mixing and filtering circuit, filter amplification circuit;
Wherein, the first output terminal of signal source is connected with the first input end of integration signal module, the second output terminal of signal source is connected with the first input end of uppermixing filtering circuit, the output terminal of integration signal module is connected with the second input end of uppermixing filtering circuit, the output terminal of uppermixing filtering circuit is connected with circulator, circulator also respectively with antenna, the input end of lower mixing and filtering circuit is connected, the output terminal of lower mixing and filtering circuit is connected with the input end of filter amplification circuit, the output terminal of filter amplification circuit is connected with the second input end of integration signal module.
2. a kind of Ka band radar wave measurement device as claimed in claim 1, is characterized in that: described integration signal module comprises fpga chip, clock distribution chip, DDS signal synthesis chip, ADC chip, data storage cell and communication unit;
Described fpga chip is connected with clock distribution chip, DDS signal synthesis chip, ADC chip, data storage cell, communication unit respectively, and clock distribution chip is also connected with DDS signal synthesis chip, ADC chip respectively.
3. a kind of Ka band radar wave measurement device as claimed in claim 2, is characterized in that: described data storage cell is SD card or USB flash memory driver.
4. a kind of Ka band radar wave measurement device as claimed in claim 2, is characterized in that: described communication unit is GPRS module, ethernet module or RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021761.0U CN203720348U (en) | 2014-01-15 | 2014-01-15 | Ka wave band radar wave measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021761.0U CN203720348U (en) | 2014-01-15 | 2014-01-15 | Ka wave band radar wave measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203720348U true CN203720348U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420021761.0U Expired - Fee Related CN203720348U (en) | 2014-01-15 | 2014-01-15 | Ka wave band radar wave measurement apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215263B (en) * | 2014-09-03 | 2017-02-15 | 中船重工鹏力（南京）大气海洋信息系统有限公司 | Device for calibrating wave height and wave period of wave buoy |
-
2014
- 2014-01-15 CN CN201420021761.0U patent/CN203720348U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215263B (en) * | 2014-09-03 | 2017-02-15 | 中船重工鹏力（南京）大气海洋信息系统有限公司 | Device for calibrating wave height and wave period of wave buoy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20170115 |