Radar bow interference suppression method

Abstract

The invention discloses a radar prow interference suppression method, which comprises the following steps: determining a radar distribution position according to a prow structure, adjusting the radar distribution position according to the number and position of prow interference sources, and determining the number of radars according to a radar coverage range requirement and a required radar frequency band; determining a corresponding frequency band according to the coverage range of each radar, and enabling a plurality of radar frequency bands to achieve the comprehensive coverage of the bow position; the radar orientation and elevation angle are confirmed based on the radar distribution position and the coverage area requirement, so that radar signals can be received in the bow direction; adjusting the beam scanning rate and the repetition period of the corresponding radar based on the interference source signal frequency, adjusting the pulse width of the corresponding radar, and adjusting the radar frequency band based on the distance change parameter of the detection echo; and determining the power of a receiving amplifier according to the radar echo receiving frequency, and carrying out corresponding radar signal processing. The interference frequency of the prow radar can be reduced.

Description

Technical Field

[0001] The invention relates to radar application, and in particular to a radar bow interference suppression method. Background Art

[0002] Radar, also known as radio positioning, is an electronic device that uses electromagnetic waves to detect targets. The structure of radar includes: transmitter, transmitting antenna, receiver, receiving antenna, processing part and display, as well as auxiliary equipment such as power supply equipment, data recording equipment, anti-interference equipment, etc. Screws are the most commonly used fastening parts and are also an indispensable part of radar. The detection means of radar has developed from only radar as a detector to the integration and cooperation of infrared light, ultraviolet light, laser and other optical detection means. It can emit electromagnetic waves to illuminate the target and receive its echo, thereby obtaining information such as the distance from the target to the electromagnetic wave emission point, the distance change rate (radial velocity), azimuth, altitude, etc. The specific uses and structures of various radars are different, but the basic form is the same. , including: transmitter, transmitting antenna, receiver, receiving antenna, processing part and display, as well as auxiliary equipment such as power supply equipment, data recording equipment, anti-interference equipment, etc. The role played by radar is similar to that of eyes and ears. Of course, it is no longer a masterpiece of nature. At the same time, its information carrier is radio waves. In fact, whether it is visible light or radio waves, they are essentially the same thing, both are electromagnetic waves, and the speed of propagation in a vacuum is the speed of light. The difference lies in their respective frequencies and wavelengths. The principle is that the transmitter of the radar equipment emits electromagnetic wave energy in a certain direction in space through the antenna, and objects in this direction reflect the electromagnetic waves they encounter; the radar antenna receives the reflected wave and sends it to the receiving equipment for processing to extract certain information about the object.

[0003] There are many types of radars, and the classification method is also very complicated. Usually, they can be classified according to the purpose of the radar, such as early warning radar, search and warning radar, guidance and command radar, height-finding radar, airborne radar, weather radar and navigation radar. In the existing patent "CN201320738799.5 A marine navigation radar system", it can reduce signal interference and make the radar image clearer, but there are various interference sources installed on the bow radar, which are not limited to the radar frequency band of the monitoring azimuth, as well as the interference source generated by the bow itself, which will affect the effective monitoring of the radar, and the radar is easily affected by the frequency of the interference source, resulting in complex radar receiving echo frequency bands, which are not easy to effectively distinguish, and affect radar monitoring. Therefore, a radar bow interference suppression method is proposed to address the above problems. Summary of the invention

[0004] The purpose of the invention is to provide a radar bow interference suppression method.

[0005] The technical solution to achieve the purpose of the present invention is: a radar bow interference suppression method, comprising the following steps:

[0006] Step 1: Determine the radar distribution position according to the bow structure, adjust the radar distribution position according to the number and position of the bow interference source, determine the number of radars according to the radar coverage requirements and the required radar frequency band, and install the radar after determining the number and position of the radars;

[0007] Step 2, determining the corresponding frequency band according to the coverage range of each radar, so that multiple radar frequency bands can achieve full coverage of the bow position;

[0008] Step 3: confirm the radar azimuth and elevation based on the radar distribution position and coverage requirements, so that the radar signal can be received in the bow direction;

[0009] Step 4: adjust the beam scanning rate and repetition period of the corresponding radar based on the interference source signal frequency, and adjust the pulse width of the corresponding radar to minimize the radar interference rate, and adjust the radar frequency band based on the distance change parameter of the detection echo;

[0010] Step 5, determine the receiving amplifier power according to the radar echo receiving frequency, and perform corresponding radar signal processing to enable the radar to achieve maximum working efficiency.

[0011] Furthermore, a filter is installed in the radar to filter the interference band.

[0012] Furthermore, the method also includes the steps of detecting the frequency of the interference source signal and selecting the corresponding radar frequency based on the interference source.

[0013] Furthermore, multiple radars are arranged at the bow position, and radars are arranged on both sides of the bow to achieve full coverage.

[0014] A radar bow interference suppression system implements the radar bow interference suppression method to achieve radar bow interference suppression.

[0015] Compared with the prior art, the present invention has the following significant advantages: the number and distribution positions of radars are determined according to the bow structure, and the bow radar frequency band is confirmed based on the frequency band and azimuth of the bow interference source, so that the interference source frequency is dispersed in the determined radar frequency band, which can reduce the interference frequency received by the radar as much as possible and improve the anti-interference ability of the bow radar; the radar frequency band is determined based on the bow use environment to achieve radar monitoring that can meet the needs and can maximize the radar coverage; by increasing the radar echo receiving frequency, the anti-interference function of radar monitoring can be effectively improved, which is suitable for reducing the interference frequency of the bow radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a flow chart of the radar bow interference suppression method. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0018] Embodiment 1

[0019] A method for suppressing radar bow interference comprises the following steps:

[0020] (1) Determine the bow area location and the radar distribution location based on the bow structure and the distribution of interference sources;

[0021] (2) Installation of multi-band radars, with the number of radars determined based on the location of the bow area;

[0022] (3) Radar band confirmation: determine the radar band based on the bow interference source and navigation route;

[0023] (4) Adjusting the azimuth and elevation of the receiving beam to achieve uniform signal distribution;

[0024] (5) Parameter change adjustment: adjust the radar's pulse width, repetition period, and beam scanning rate parameters;

[0025] (6) Signal reception processing, determining the power of the receiving amplifier and signal processor.

[0026] In the step (1), the radar distribution position is determined according to the bow structure, and the position of the interference source at the bow is determined. The radar distribution position is adjusted based on the interference source. Multiple radars are set at the bow position and radars are set on both sides of the bow to achieve full coverage.

[0027] After the number and position of the bow interference sources are determined in step (1), the interference source signal frequency is detected and the corresponding radar frequency is selected based on the interference source.

[0028] In the step (2), the number of radars is determined according to the radar coverage requirements and the required radar frequency bands, and the radars are installed after the number and positions of the radars are determined.

[0029] In the step (3), the corresponding frequency band is determined according to the coverage range of each radar, so that multiple radar frequency bands can achieve full coverage of the bow position.

[0030] In the step (3), a filter is installed in the radar, and the interference band is filtered through the filter.

[0031] In the step (4), the radar azimuth and elevation are confirmed based on the radar distribution position and coverage range requirements, so that the radar signal can be received in the bow direction.

[0032] In the step (5), the beam scanning rate and repetition period of the corresponding radar are adjusted based on the interference source signal frequency, and the pulse width of the corresponding radar is adjusted to minimize the radar interference rate.

[0033] In the step (5), the radar frequency band is adjusted based on the distance change parameter of the detected echo.

[0034] In the step (6), the receiving amplifier power is determined according to the radar echo receiving frequency, and the corresponding radar signal processing and data processing are performed so that the radar can achieve maximum working efficiency.

[0035] The above method is suitable for all-round monitoring of the bow radar, which can improve the radar anti-interference ability at the bow position and provide comprehensive monitoring, but the cost is relatively high.

[0036] Embodiment 2

[0037] A method for suppressing radar bow interference comprises the following steps:

[0038] (1) Determine the bow area location and the radar distribution location based on the bow structure and the distribution of interference sources;

[0039] (2) Installation of multi-band radars, with the number of radars determined based on the location of the bow area;

[0040] (3) Radar band confirmation: determine the radar band based on the bow interference source and navigation route;

[0041] (4) Adjusting the azimuth and elevation of the receiving beam to achieve uniform signal distribution;

[0042] (5) Parameter change adjustment: adjust the radar's pulse width, repetition period, and beam scanning rate parameters;

[0043] (6) Signal reception processing, determining the power of the receiving amplifier and signal processor.

[0044] In the step (1), the radar distribution position is determined according to the bow structure, and the position of the interference source at the bow is determined. The radar distribution position is adjusted based on the interference source. Two radars are set at the bow position and radars are set on both sides of the bow to achieve full coverage.

[0045] After the number and position of the bow interference sources are determined in step (1), the interference source signal frequency is detected and the corresponding radar frequency is selected based on the interference source.

[0046] In the step (2), the number of radars is determined according to the radar coverage requirements and the required radar frequency bands, and the radars are installed after the number and positions of the radars are determined.

[0047] In the step (3), the corresponding frequency band is determined according to the coverage range of each radar, so that multiple radar frequency bands can achieve full coverage of the bow position.

[0048] In the step (3), a filter is installed in the radar, and the interference band is filtered through the filter.

[0049] In the step (4), the radar azimuth and elevation are confirmed based on the radar distribution position and coverage range requirements, so that the radar signal can be received in the bow direction.

[0050] In the step (5), the beam scanning rate and repetition period of the corresponding radar are adjusted based on the interference source signal frequency, and the pulse width of the corresponding radar is adjusted to minimize the radar interference rate.

[0051] In the step (5), the radar frequency band is adjusted based on the distance change parameter of the detected echo.

[0052] In the step (6), the receiving amplifier power is determined according to the radar echo receiving frequency, and the corresponding radar signal processing and data processing are performed so that the radar can achieve maximum working efficiency.

[0053] The above method is suitable for all-round monitoring of the bow radar, which can improve the anti-interference ability of the radar at the bow position, and the monitoring is more comprehensive and low-cost.

[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A radar bow interference suppression method, characterized in that: The steps include: Step 1: Determine the radar distribution position according to the bow structure, adjust the radar distribution position according to the number and position of the bow interference source, determine the number of radars according to the radar coverage requirements and the required radar frequency band, and install the radar after determining the number and position of the radars; Step 2, determining the corresponding frequency band according to the coverage range of each radar, so that multiple radar frequency bands can achieve full coverage of the bow position; Step 3: confirm the radar azimuth and elevation based on the radar distribution position and coverage requirements, so that the radar signal can be received in the bow direction; Step 4: adjust the beam scanning rate and repetition period of the corresponding radar based on the interference source signal frequency, and adjust the pulse width of the corresponding radar to minimize the radar interference rate, and adjust the radar frequency band based on the distance change parameter of the detection echo; Step 5, determine the receiving amplifier power according to the radar echo receiving frequency, and perform corresponding radar signal processing to enable the radar to achieve maximum working efficiency.

2. The radar bow interference suppression method according to claim 1, characterized in that: A filter is installed in the radar to filter out the interference band.

3. The radar bow interference suppression method according to claim 1, characterized in that: The method also includes the steps of detecting the frequency of the interference source signal and selecting the corresponding radar frequency based on the interference source.

4. The radar bow interference suppression method according to claim 1, characterized in that: Multiple radars are installed at the bow, and radars are installed on both sides of the bow to achieve full coverage.

5. A radar bow interference suppression system, characterized in that: The radar bow interference suppression method described in any one of claims 1 to 4 is implemented to achieve radar bow interference suppression.

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