CN210119560U - Novel surface ship monitoring radar front end - Google Patents
Novel surface ship monitoring radar front end Download PDFInfo
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- CN210119560U CN210119560U CN201920821275.XU CN201920821275U CN210119560U CN 210119560 U CN210119560 U CN 210119560U CN 201920821275 U CN201920821275 U CN 201920821275U CN 210119560 U CN210119560 U CN 210119560U
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Abstract
The utility model discloses a novel surface ship monitoring radar front end, including transmission subsystem, receiving subsystem and sky servo subsystem, the sky servo subsystem includes antenna unit and servo unit, antenna unit includes transmitting antenna and receiving antenna, the output of transmission subsystem is connected with the transmitting antenna input, the receiving antenna output is connected with the receiving subsystem input; the transmitting subsystem comprises an X-waveband all-solid-state power amplifier, and the receiving subsystem is internally formed by sequentially connecting a radar system exciter, a radar system receiver, a receiving control module and a receiving power supply module; the utility model discloses compare with traditional radar front end, need not regularly to change the subassembly, product life is longer. The low-voltage power supply design enables the product to be higher in safety and reliability. The full-coherent signal system enables the radar system to have a higher signal-to-noise ratio, and the target detection effect is improved.
Description
Technical Field
The utility model relates to a radar's for boats and ships are kept watch on device especially relates to a novel surface of water boats and ships keep watch on radar front end.
Background
The front end of the traditional water surface ship monitoring radar adopts a magnetron as a transmitting signal source, and the transmitting signal is in a pulse form. The magnetron, as a vacuum device, has a limited service life, usually several hundreds to several thousands of hours, and needs to be replaced regularly, otherwise the transmitted power of the radar system is reduced, the performance of the radar system is reduced, and the replacement cost of the magnetron is very expensive.
In the traditional radar front end with a pulse system, a transmitted signal has very high peak power, so that the detection range power of a radar system can be ensured. A high voltage power supply is required to generate a high peak power transmit signal. The design and implementation of the high-voltage power supply are very complicated, and the safety and the reliability are low.
The transmitted signals of the traditional radar front end are not coherent, so that the radar system usually does not adopt an accumulation algorithm or only adopts a non-coherent accumulation algorithm during signal processing. This makes the signal-to-noise ratio of conventional radar systems low, which is not conducive to target detection.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve traditional radar front end and need regularly change life-span device, high peak transmitting power easily causes electromagnetic pollution, power design security, reliability low, and the raw data SNR is low, is unfavorable for the target detection scheduling problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a novel surface ship monitoring radar front end comprises a transmitting subsystem, a receiving subsystem and an antenna servo subsystem, wherein the antenna servo subsystem comprises an antenna unit and a servo unit, the antenna unit comprises a transmitting antenna and a receiving antenna, the output end of the transmitting subsystem is connected with the input end of the transmitting antenna, and the transmitting antenna directionally radiates electromagnetic energy generated by the transmitting subsystem into the atmosphere; the output end of the receiving antenna is connected with the input end of the receiving split system, and the receiving antenna transmits the electromagnetic waves scattered by the target to the receiving split system;
the transmitting subsystem is an X-band all-solid-state power amplifier, and the X-band all-solid-state power amplifier is designed and manufactured by an all-solid-state transmitter and a power combiner;
the receiving subsystem is of a chassis structure and is formed by sequentially connecting a radar system exciter, a radar system receiver, a receiving control module and a receiving power module, and the receiving subsystem is used for amplifying and processing received electromagnetic waves and transmitting results to a terminal;
the receiving control module realizes the communication between the receiving subsystem and other subsystems and performs communication and control on all modules in the receiving subsystem.
The receiving power supply module converts alternating current into direct current for each module in the receiving subsystem to use;
the servo unit comprises a base and a communication controller, the antenna unit and the communication controller are placed on the base, and annular and sector scanning can be conducted on a horizontal plane by means of antenna pointing.
Preferably, the radar system exciter consists of a frequency synthesis module and a frequency synthesis module, and the frequency synthesis module are connected in parallel and then are connected in series with the radar system receiver, the receiving control module and the receiving power supply module; the radar system exciter is connected with the transmitting subsystem; the radar system exciter generates and supplies a reference for radar operation such as time, frequency, antenna pointing, etc. common to the transmitted and received signals.
Preferably, the radar system receiver consists of an analog receiving module and a digital receiving module which are connected in parallel and then connected in series with the radar system exciter, the receiving control module and the receiving power supply module; the analog and digital demodulation of the echo signals is realized, and finally, the digital baseband original data is output in the form of optical signals.
Preferably, the antenna unit is a transmitting-receiving dual antenna, and simultaneously performs radar signal transmission and echo signal reception.
Preferably, the transmitting-receiving dual-antenna structure is designed for a waveguide horn feed source and a spherical reflecting surface.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a traditional radar front end need regularly change life-span device is solved to continuous wave signal technique, all solid-state transmission technique and the totally coherent technique of digit, and high peak transmitting power easily causes electromagnetic pollution, power design security, reliability low, and the original data SNR is low, is unfavorable for the target detection scheduling problem.
2. The utility model discloses compare with traditional radar front end, need not regularly to change the subassembly, product life is longer. The low-voltage power supply design enables the product to be higher in safety and reliability. The full-coherent signal system enables the radar system to have a higher signal-to-noise ratio, and the target detection effect is improved.
Drawings
FIG. 1 is a schematic block diagram of the mechanism of the present invention
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1: the utility model relates to a novel surface ship surveillance radar front end, including transmission subsystem, receiving subsystem and sky servo subsystem, the sky servo subsystem includes antenna element and servo unit, antenna element includes transmitting antenna and receiving antenna, the output of transmission subsystem is connected with the transmitting antenna input, the receiving antenna output is connected with receiving split system input, the transmission subsystem includes the full solid state power amplifier of X wave band, the full solid state power amplifier of X wave band comprises full solid state transmitter and power combiner; the main function is to amplify the radar excitation signal and output the high-power radar emission signal.
The receiving subsystem is of a chassis structure and is internally formed by sequentially connecting a radar system exciter, a radar system receiver, a receiving control module and a receiving power supply module; the main functions are to generate a radar excitation signal, demodulate a radar echo signal and output digital baseband data of a radar system in the form of an optical signal. The antenna servo subsystem comprises an antenna unit and a servo unit, wherein the servo unit comprises a base and a communication controller, and the antenna unit and the communication controller are placed on the base to realize that the pointing direction of an antenna can be circularly and fanwise scanned on a horizontal plane;
the radar system exciter consists of a frequency synthesis module and a frequency synthesis module, and generates a full-coherent local oscillation signal of a transmitting excitation signal and other clock signals and synchronous signals required by a radar system by adopting a digital frequency synthesis technology. The radar system receiver is composed of an analog receiving module and a digital receiving module, analog and digital demodulation of echo signals is achieved, and digital baseband original data are finally output in an optical signal mode. The receiving control module realizes the communication between the receiving subsystem and other subsystems and performs communication and control on each module in the receiving subsystem. The receiving power supply module converts alternating current into direct current for each module in the receiving subsystem to use.
The antenna unit is a transmitting and receiving double antenna and is used for transmitting radar signals and receiving echo signals simultaneously. The transmitting-receiving double-antenna structure is designed for a waveguide horn feed source and a spherical reflecting surface.
The work is as follows: the radar system exciter generates a coherent local oscillation signal of a transmitting excitation signal by adopting a digital frequency synthesis technology, the full-solid-state transmitter and the power synthesizer amplify the radar excitation signal, a high-power radar transmitting signal is transmitted to the air through a double-antenna structure, meanwhile, a double-antenna mechanism collects electromagnetic waves scattered by a target object and feeds the electromagnetic waves back to a receiving subsystem, a transmitting-receiving antenna is of a double-antenna structure, and each antenna is designed by adopting a waveguide horn feed source and a spherical reflecting surface. The base and the communication controller complete a servo control function, realize that the antenna points to and can do annular and sector scanning on the horizontal plane, guarantee that the antenna can all-round scanning.
After the receiving subsystem receives the signals, the radar system receiver performs analog and digital demodulation on the echo signals, and finally outputs digital baseband original data in the form of optical signals. And a radar system exciter for generating other clock signals and synchronous signals required by the radar system. The receiving control module realizes the communication between the receiving subsystem and other subsystems and performs communication and control on each module in the receiving subsystem. The receiving power supply module converts alternating current into direct current for each module in the receiving subsystem to use. The modules are matched to realize that the receiving subsystem amplifies and processes the received electromagnetic wave and sends the result to the terminal.
Claims (5)
1. The utility model provides a novel surface of water boats and ships surveillance radar front end which characterized in that: the system comprises a transmitting subsystem, a receiving subsystem and an antenna servo subsystem, wherein the antenna servo subsystem comprises an antenna unit and a servo unit, the antenna unit comprises a transmitting antenna and a receiving antenna, the output end of the transmitting subsystem is connected with the input end of the transmitting antenna, and the transmitting antenna directionally radiates electromagnetic energy generated by the transmitting subsystem into the atmosphere; the output end of the receiving antenna is connected with the input end of the receiving split system, and the receiving antenna transmits the electromagnetic waves scattered by the target to the receiving split system;
the transmitting subsystem comprises an X-band all-solid-state power amplifier, and the X-band all-solid-state power amplifier is designed and manufactured by an all-solid-state transmitter and a power combiner;
the receiving subsystem is of a chassis structure and is formed by sequentially connecting a radar system exciter, a radar system receiver, a receiving control module and a receiving power module, and the receiving subsystem is used for amplifying and processing received electromagnetic waves and transmitting results to a terminal;
the receiving control module realizes the communication between the receiving subsystem and other subsystems and carries out communication and control on each module in the receiving subsystem;
the receiving power supply module converts alternating current into direct current for each module in the receiving subsystem to use;
the servo unit comprises a base and a communication controller, the antenna unit and the communication controller are placed on the base, and annular and sector scanning can be conducted on a horizontal plane by means of antenna pointing.
2. A novel surface vessel surveillance radar front end as claimed in claim 1, wherein: the radar system exciter consists of a frequency synthesis module and a frequency synthesis module, and the frequency synthesis module are connected in parallel and then are connected in series with a radar system receiver, a receiving control module and a receiving power supply module; the radar system exciter is connected with the transmitting subsystem; the radar system exciter generates and supplies a reference for radar operation such as time, frequency, antenna pointing, etc. common to the transmitted and received signals.
3. A novel surface vessel surveillance radar front end as claimed in claim 1, wherein: the radar system receiver consists of an analog receiving module and a digital receiving module which are connected in parallel and then connected in series with a radar system exciter, a receiving control module and a receiving power supply module; the analog and digital demodulation of the echo signals is realized, and finally, the digital baseband original data is output in the form of optical signals.
4. A novel surface vessel surveillance radar front end as claimed in claim 1, wherein: the antenna unit is a transmitting and receiving double antenna and is used for transmitting radar signals and receiving echo signals at the same time.
5. The novel surface vessel surveillance radar front end of claim 4, wherein: the transmitting-receiving double-antenna structure is designed for a waveguide horn feed source and a spherical reflecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920821275.XU CN210119560U (en) | 2019-06-03 | 2019-06-03 | Novel surface ship monitoring radar front end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920821275.XU CN210119560U (en) | 2019-06-03 | 2019-06-03 | Novel surface ship monitoring radar front end |
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| Publication Number | Publication Date |
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| CN210119560U true CN210119560U (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920821275.XU Active CN210119560U (en) | 2019-06-03 | 2019-06-03 | Novel surface ship monitoring radar front end |
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|---|---|
| CN (1) | CN210119560U (en) |
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- 2019-06-03 CN CN201920821275.XU patent/CN210119560U/en active Active
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