CN111371470B - Calibration noise source distribution network device - Google Patents
Calibration noise source distribution network device Download PDFInfo
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- CN111371470B CN111371470B CN202010179398.5A CN202010179398A CN111371470B CN 111371470 B CN111371470 B CN 111371470B CN 202010179398 A CN202010179398 A CN 202010179398A CN 111371470 B CN111371470 B CN 111371470B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/26—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Noise Elimination (AREA)
Abstract
The invention provides a calibration noise source distribution network device, which comprises a noise source, an interface circuit, a voltage stabilizing circuit, a wave control circuit, a radio frequency channel and a control panel, wherein the noise source is connected with the interface circuit; a noise source for providing a reference noise signal; the voltage stabilizing circuit is used for stabilizing the voltage of the wave control circuit and the radio frequency channel; the interface circuit is used for providing an external communication interface for the radio frequency channel; the control panel is used for sending a control code to the wave control circuit; the wave control circuit is used for transmitting the control code to the radio frequency channel; and the radio frequency path is provided with a plurality of output channels and is used for outputting the noise signals with different over noise ratios and different phases through the plurality of output channels according to the control code. In the invention, the radio frequency channel is provided with a plurality of output channels, and the reference noise signal can be output to noise signals with different super-noise ratios and different phases through the plurality of output channels according to the control code, thereby providing phase compensation among multi-arm receivers and improving the calibration accuracy and the calibration flexibility of the receivers.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a calibration noise source distribution network device.
Background
A satellite-borne Synthetic Aperture Radar (SAR) is an active remote sensor operating in the microwave frequency band and is the main payload of a synthetic aperture radar satellite.
The satellite-borne synthetic aperture radar is not limited by sunshine and weather conditions, and can observe the earth all day long. The characteristics enable the satellite-borne synthetic aperture radar to have unique advantages in the aspects of disaster monitoring, environment monitoring, ocean observation, crop evaluation, surveying and mapping, military affairs and the like, and the application needs to quantitatively measure the characteristics of the target, eliminate error factors in a satellite-borne synthetic aperture radar system and obtain the absolute value of the target echo. Therefore, the calibration of the satellite-borne synthetic aperture radar system is needed. In order to meet the high-precision requirement of the measurement of a satellite-borne synthetic aperture radar system, the high-precision index of a calibration receiver is particularly important, and the precision error is the key. The ordinary solid-state noise source has fixed over-noise ratio and phase, and cannot adapt to the complex requirements of calibration of a receiver on multiple channels, multiple phases and multiple over-noise ratios.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a calibration noise source distribution network device which has flexible and changeable super-noise ratio, can provide phase compensation between multi-arm receivers, and improves the calibration accuracy and flexibility of the receivers.
The calibration noise source distribution network device provided by the invention comprises a noise source, an interface circuit, a voltage stabilizing circuit, a wave control circuit, a radio frequency channel and a control board;
the noise source is used for providing a reference noise signal;
the voltage stabilizing circuit is used for stabilizing the voltage of the wave control circuit and the radio frequency channel;
the interface circuit is used for providing an external communication interface for the radio frequency channel;
the control board is used for sending a control code to the wave control circuit;
the wave control circuit is used for transmitting the control code to the radio frequency channel;
the radio frequency channel is provided with a plurality of output channels and is used for outputting the noise signals with different over noise ratios and different phases through the plurality of output channels according to the control codes.
Preferably, the radio frequency path includes an amplifying filter circuit, a numerical control attenuation circuit, and a power division phase shift circuit;
the amplifying and filtering circuit, the numerical control attenuation circuit and the power division and phase shift circuit are sequentially cascaded.
Preferably, the amplifying and filtering circuit comprises an amplifier and a filter;
the amplifier is used for amplifying the reference noise signal;
and the filter is used for filtering the reference noise signal amplified by the amplifier so as to improve the super-noise ratio of the reference noise signal.
Preferably, the digitally controlled attenuation circuit comprises a digitally controlled attenuator;
one end of the numerical control attenuator is connected with the output end of the amplifying and filtering circuit, and the other end of the numerical control attenuator is connected with the input end of the power dividing and phase shifting circuit.
Preferably, the power division phase shift circuit comprises a power divider with N paths and N number-controlled phase shifters, wherein N is more than or equal to 2;
and the power divider is used for dividing the noise signals output by the numerical control attenuation circuit into N paths and inputting the N paths of noise signals into the corresponding phase shifter.
Preferably, the control code comprises a chip selection signal, a clock signal, a latch signal and control data;
the chip selection signal is used for selecting an output channel of the radio frequency channel;
the control data includes phase shift information and attenuation information.
Preferably, the wave control circuit is configured to send the control code after serial-to-parallel conversion and output channel selection to the numerical control attenuator and the numerical control phase shifter, so as to obtain noise signals of different super-noise ratios and different phases of corresponding output channels.
Preferably, the interface circuit comprises a radio frequency interface, a control interface and a power interface,
the radio frequency interface comprises a radio frequency input port and N radio frequency output ports, the noise source is communicated with the input end of the radio frequency channel through the radio frequency input port, and the output end of the radio frequency channel is communicated with the radio frequency output port;
the input end of the control interface is connected with the control panel, and the output end of the control interface is connected with the wave control circuit;
and the voltage stabilizing source supplies power through the power interface.
Preferably, the power division phase shift circuit further includes N temperature-compensated attenuators;
the output end of the numerical control phase shifter is connected with the input end of the temperature compensation attenuator; and the output end of the temperature compensation attenuator is communicated with a radio frequency output port of the interface circuit.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, the radio frequency channel is provided with a plurality of output channels, and the reference noise signal can be output to noise signals with different super-noise ratios and different phases through the plurality of output channels according to the control code, so that the phase compensation among multi-arm receivers can be provided, and the calibration accuracy and the calibration flexibility of the receivers are improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a block diagram of a scaled noise distribution network apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram of a scaled noise distribution network apparatus according to an embodiment of the present invention;
FIG. 3 is a timing diagram of control codes for a scaled noise distribution network device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1 is a block diagram of a scaled noise distribution network device according to an embodiment of the present invention, as shown in fig. 1, in this embodiment, the scaled noise distribution network device according to the present invention includes: the device comprises a noise source 1, an interface circuit 2, a voltage stabilizing circuit 3, a wave control circuit 4, a radio frequency channel 5 and a control board 6.
The noise source is used for providing a reference noise signal;
the voltage stabilizing circuit is used for stabilizing the voltage of the wave control circuit and the radio frequency channel;
the interface circuit is used for providing an external communication interface for the radio frequency channel;
the control board is used for sending a control code to the wave control circuit;
the wave control circuit is used for transmitting the control code to the radio frequency channel;
the radio frequency channel is provided with a plurality of output channels and is used for outputting the noise signals with different over noise ratios and different phases through the plurality of output channels according to the control codes.
In the embodiment of the invention, the noise source adopts a Noisecom NC3240B standard noise source, the standard noise source is used for providing a reference noise signal within a frequency range of 2-40 GHz, the output over-noise ratio is about 25dB, the working voltage is +28V, and the output noise signal enters a radio frequency channel through a radio frequency interface of the interface circuit.
In the embodiment of the present invention, the control code sent by the control board includes a chip select signal CS, a clock signal CLK, a latch signal LOAD and control data DATE, and the chip select signal CS, the clock signal CLK, the latch signal LOAD and the control data DATE are TTL signals. The chip select signal is used for selection of an output channel of the radio frequency path. The control data DATE includes attenuation information and phase shifter information. And the wave control circuit is used for sending the control code into the numerical control attenuator and the numerical control phase shifter after serial-parallel conversion and output channel selection so as to obtain noise signals with different super-noise ratios and different phases of corresponding output channels.
In the embodiment of the invention, the 6-bit digital phase shifter and the 6-bit digital attenuator are adopted, so that the attenuation stepping of 0.25dB and the phase shifting stepping of 5.625 degrees can be provided. The clock signal is asserted on the rising edge, and the chip select signal CS is low, as shown in fig. 3.
In the embodiment of the invention, the radio frequency path comprises an amplifying filter circuit, a numerical control attenuation circuit and a power division phase-shifting circuit; the amplifying and filtering circuit, the numerical control attenuation circuit and the power division and phase shift circuit are sequentially cascaded.
The amplifying and filtering circuit comprises an amplifier and a filter, wherein the amplifier is used for amplifying the reference noise signal; and the filter is used for filtering the reference noise signal amplified by the amplifier so as to improve the super-noise ratio of the reference noise signal. The gain of the amplifier is 30dB, and the amplifier is used for amplifying the super noise ratio of the noise signal to 50dB and sending the amplified signal into a filter with the central frequency of 10GHz and the bandwidth of about 2GHz, so that the noise signal with the higher working bandwidth and the super noise ratio, such as 9GHz-11GHz, is obtained;
in the embodiment of the invention, the numerical control attenuation circuit comprises a numerical control attenuator, one end of the numerical control attenuator is connected with the output end of the amplification filter circuit, and the other end of the numerical control attenuator is connected with the input end of the power division phase shift circuit. The maximum attenuation of the numerical control attenuator is 30dB, and 20-50dB of noise signal with an ultra-noise ratio can be obtained at the output end by inputting different attenuation codes.
In the embodiment of the invention, the power division phase shift circuit comprises a 3-path power divider and 3 numerical control phase shifters, wherein the power divider divides a noise signal into 3 paths and inputs the 3 paths into the corresponding numerical control phase shifters. And adjusting the numerical control phase shifting code to obtain the phase compensation of the multi-arm receiver.
The power division phase shift circuit also comprises N temperature compensation attenuators;
the output end of the numerical control phase shifter is connected with the input end of the temperature compensation attenuator; and the output end of the temperature compensation attenuator is communicated with a radio frequency output port of the interface circuit.
The interface circuit comprises a radio frequency interface, a control interface and a power interface,
the radio frequency interface comprises a radio frequency input port and 3 radio frequency output ports, the noise source is communicated with the input end of the radio frequency channel through the radio frequency input port, and the output end of the radio frequency channel is communicated with the radio frequency output port;
the input end of the control interface is connected with the control panel, and the output end of the control interface is connected with the wave control circuit;
and the voltage stabilizing source supplies power to the whole device through the power interface.
In the embodiment of the invention, the radio frequency channel is provided with a plurality of output channels, and the reference noise signal can be output to noise signals with different super noise ratios and different phases through the plurality of output channels according to the control code, so that phase compensation among multi-arm receivers can be provided, and the calibration accuracy and the calibration flexibility of the receivers are improved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. A calibration noise source distribution network device is characterized by comprising a noise source, an interface circuit, a voltage stabilizing circuit, a wave control circuit, a radio frequency channel and a control panel;
the noise source is used for providing a reference noise signal;
the voltage stabilizing circuit is used for stabilizing the voltage of the wave control circuit and the radio frequency channel;
the interface circuit is used for providing an external communication interface for the radio frequency channel;
the control board is used for sending a control code to the wave control circuit;
the wave control circuit is used for transmitting the control code to the radio frequency channel;
the radio frequency channel is provided with a plurality of output channels and is used for outputting the noise signals with different over noise ratios and different phases through the plurality of output channels according to the control codes;
the control data in the control code comprises attenuation information and phase shifter information; and the wave control circuit is used for sending the control code into the numerical control attenuator and the numerical control phase shifter after serial-parallel conversion and output channel selection so as to obtain noise signals with different super-noise ratios and different phases of corresponding output channels.
2. The scaled noise source distribution network device of claim 1, wherein the radio frequency path comprises an amplification filter circuit, a digitally controlled attenuation circuit, and a power dividing and phase shifting circuit;
the amplifying and filtering circuit, the numerical control attenuation circuit and the power division and phase shift circuit are sequentially cascaded.
3. The scaled noise source distribution network apparatus of claim 2, wherein the amplification filtering circuit comprises an amplifier and a filter;
the amplifier is used for amplifying the reference noise signal;
and the filter is used for filtering the reference noise signal amplified by the amplifier so as to improve the super-noise ratio of the reference noise signal.
4. The scaled noise source distribution network apparatus of claim 2, wherein the digitally controlled attenuation circuit comprises a digitally controlled attenuator;
one end of the numerical control attenuator is connected with the output end of the amplifying and filtering circuit, and the other end of the numerical control attenuator is connected with the input end of the power dividing and phase shifting circuit.
5. The scaled noise source distribution network device according to claim 2, wherein the power division phase shift circuit comprises a power divider with N paths and N number-controlled phase shifters, where N is greater than or equal to 2;
and the power divider is used for dividing the noise signals output by the numerical control attenuation circuit into N paths and inputting the N paths of noise signals into the corresponding phase shifter.
6. The scaled noise source distribution network device of claim 2, wherein the control code comprises a chip select signal, a clock signal, a latch signal, and control data;
the chip select signal is used for selection of an output channel of the radio frequency path.
7. The scaled noise source distribution network device of claim 1, further comprising a regulated power supply, the interface circuit comprising a radio frequency interface, a control interface, and a power interface,
the radio frequency interface comprises a radio frequency input port and N radio frequency output ports, the noise source is communicated with the input end of the radio frequency channel through the radio frequency input port, and the output end of the radio frequency channel is communicated with the radio frequency output port;
the input end of the control interface is connected with the control panel, and the output end of the control interface is connected with the wave control circuit;
and the voltage stabilizing source supplies power through the power interface.
8. The scaled noise source distribution network device of claim 5, wherein the power-dividing phase-shifting circuit further comprises N temperature-compensated attenuators;
the output end of the numerical control phase shifter is connected with the input end of the temperature compensation attenuator; and the output end of the temperature compensation attenuator is communicated with a radio frequency output port of the interface circuit.
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| CN202010179398.5A CN111371470B (en) | 2020-03-13 | 2020-03-13 | Calibration noise source distribution network device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082670A (en) * | 2006-06-02 | 2007-12-05 | 中国科学院电子学研究所 | Active externally coefficient potentiometer and scaling method of wideband synthetic aperture radar |
| CN101236247A (en) * | 2008-03-07 | 2008-08-06 | 北京航空航天大学 | Star-carrying multichannel antenna SAR data channel amplitude and phase error correction platform |
| EP1628406B1 (en) * | 2004-08-16 | 2012-04-18 | Broadcom Corporation | Method and system for digital baseband receiver with digital RF/IF/VLIF support in GSM/GPRS/EDGE compliant handsets |
| CN103107965A (en) * | 2013-02-06 | 2013-05-15 | 中国科学院电子学研究所 | Airborne interference synthetic aperture radar (SAR) multichannel broadband receiver amplitude phase compensation method and device |
| US8947294B1 (en) * | 2011-11-02 | 2015-02-03 | Lockheed Martin Corporation | Method and system for adaptively cancelling clutter from the sidelobes of a ground-based radar |
| CN109541325A (en) * | 2018-11-27 | 2019-03-29 | 上海航天电子通讯设备研究所 | The spaceborne one-dimensional Synthetic Aperture Microwave radioactivity detection, identificationm, and computation of one kind and measurement method |
| CN110488286A (en) * | 2019-07-29 | 2019-11-22 | 中国科学院电子学研究所 | A kind of biradical Spaceborne SAR System multifunction microwave unitized designing method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100555885C (en) * | 2002-12-11 | 2009-10-28 | R.F.麦吉克公司 | Integrated crosspoint switch with frequency band transformation |
-
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- 2020-03-13 CN CN202010179398.5A patent/CN111371470B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1628406B1 (en) * | 2004-08-16 | 2012-04-18 | Broadcom Corporation | Method and system for digital baseband receiver with digital RF/IF/VLIF support in GSM/GPRS/EDGE compliant handsets |
| CN101082670A (en) * | 2006-06-02 | 2007-12-05 | 中国科学院电子学研究所 | Active externally coefficient potentiometer and scaling method of wideband synthetic aperture radar |
| CN101236247A (en) * | 2008-03-07 | 2008-08-06 | 北京航空航天大学 | Star-carrying multichannel antenna SAR data channel amplitude and phase error correction platform |
| US8947294B1 (en) * | 2011-11-02 | 2015-02-03 | Lockheed Martin Corporation | Method and system for adaptively cancelling clutter from the sidelobes of a ground-based radar |
| CN103107965A (en) * | 2013-02-06 | 2013-05-15 | 中国科学院电子学研究所 | Airborne interference synthetic aperture radar (SAR) multichannel broadband receiver amplitude phase compensation method and device |
| CN109541325A (en) * | 2018-11-27 | 2019-03-29 | 上海航天电子通讯设备研究所 | The spaceborne one-dimensional Synthetic Aperture Microwave radioactivity detection, identificationm, and computation of one kind and measurement method |
| CN110488286A (en) * | 2019-07-29 | 2019-11-22 | 中国科学院电子学研究所 | A kind of biradical Spaceborne SAR System multifunction microwave unitized designing method and device |
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