Navigation (P OS I t i o n i n g), positioning (n a V I g a t i o n) and time service (t I m i n g), that is, P n t system, is the growth pole of national economic development and the cornerstone of information construction, affects all aspects of our life and work, and is the general direction of future development. Golden beacon company (www.bds666. Com) has developed from the research, development, production and sales of Beidou GPS module of "kinghelm" brand to the research, development, production and sales of a series of Beidou GPS antenna connecting lines, RF coaxial connectors and other products to the automotive harness connectors. The company's vision is to become a leading provider of microwave, RF, wireless connections and Beidou application products, It has been working hard in the Beidou industry for 14 years, and the Beidou B3 band antenna connector in the military industry is developing new products.

The WeChat official account of the Beidou expert, the golden navigation aids operation, has been promoting the Beidou science popularization Beidou to promote Beidou to speak well the characters and stories of the big dipper and to drum up the flag for the development of our country's Beidou business. Mr. Song Shiqiang, founder of golden beacon company, is a private enterprise development research expert of the economic development center of the State Council. He has actively made suggestions and suggestions for Shenzhen's economic development and development reform. Many papers on macroeconomic research and Shenzhen's economic development have been published in authoritative media, providing new ideas and new perspectives for Shenzhen's economic development and system reform. Jinhangbiao is an enterprise developed from Huaqiangbei. Mr. Song Shiqiang has always paid attention to Huaqiangbei, studied Huaqiangbei, wrote a large number of articles to analyze the traditional Huaqiangbei business model, thought and explored for the development and transformation of Huaqiangbei, and made great calls for suggestions for purifying and standardizing Huaqiangbei's business environment, It is hoped that Huaqiangbei will become a representative of Shenzhen's prosperity and a business card to show the great achievements of reform and opening up.

GPS module Beidou antenna communication antenna series of golden beacon kinghelm

First Beidou BDS (Beidou System) satellite system

The full name of Beidou system is China Beidou navigation satellite system (BDS). Together with the US GPS global positioning system, the Russian GLONASS global navigation satellite system and the EU Galileo positioning and navigation system, it is called the world's four major navigation systems. Of course, Japan and India are also building or planning to build their own navigation systems, but they are not yet climate change.

The bottom technology of the four navigation systems is microwave and RF technology, plus the basic data calculation function. The module of the navigation and positioning terminal equipment includes two parts: RF chip and baseband chip. The RF chip receives the signal sent by the Beidou GPS satellite running in the sky through the Beidou GPS antenna (jinhangbiao kinghelm R & D and production series Beidou GPS antenna and RF connecting line connector coaxial cable) and transmits it to the baseband chip through the RF connector coaxial cable, Beidou baseband chip calculates the position of the terminal at that time according to the received signal data. Navigation, positioning and timing have other extended functions and application scenarios, which has spawned a huge application market. The products and functions of the chip module antenna application terminal of the GPS Beidou Galileo Galileo Galileo positioning system can be switched compatible with each other.

Kinghelm gold navigation mark R & D and production of RF connector base sub connector and other products

GPS global positioning and navigation system was developed by the United States in the 1960s. It was well known in the Gulf War in the 1990s. After decades of development, GPS is the best and most perfect navigation and positioning system in the world. The GPS global positioning and navigation system consists of 213 satellites distributed on 6 orbital planes, with an orbital height of 20200km and an operation cycle of 11 hours and 58 minutes. GPS application has penetrated into all aspects of our life. When it comes to GPS, we naturally think of navigation. With the advantages of early launch, high coverage and accurate positioning, GPS led by the United States has rapidly popularized all over the world. GPS chips and solutions are widely used in cars, smart phones, ships, wearable devices, vehicles or smart devices. GLONASS GLONASS, a Russian navigation system, consists of 24 satellites distributed on three orbital planes. Each orbital plane has 8 satellites, with an orbital height of 19100 km and an operation cycle of 11 hours and 15 minutes. In recent years, dragged down by Russia's weak economy, GLONASS GLONASS has a flat performance and weak follow-up. Most of them are used in Russia's military weapons and national security. Galileo Galileo, a European positioning and navigation system, consists of 30 satellites distributed in three orbits with an orbital height of 24126km. The positioning accuracy of Galileo Galileo system is quite good. The chip modules of the GPS Beidou Galileo Galileo Galileo positioning system are compatible with terminal functions, and are not exclusive. They are used in cross mixing in many cases. The Beidou GPS antenna and ceramic chip of our golden beacon can accommodate these four frequency points. The above is a system based on satellite transmitting and transmitting signals in the sky. We usually call it satellite based system, and its corresponding land-based system, sea based system, etc.

Beidou BDS (Beidou System) is a navigation and positioning system independently developed by China. Its technical index market share currently ranks second in the world. According to the current development trend, it is likely to surpass the GPS system of the United States. Before the application of Beidou was mature, domestic related industries were basically matched with GPS, and the core things were controlled by others. Now beidou-3 has achieved global signal coverage. More than five Beidou satellites can be seen in any region of the earth. Beidou has truly become a real global positioning system. The beidou-3 system consists of 24 medium circlesEarth orbitSatellites, 3Geostationary orbitSatellite and 3 tiltGeosynchronous orbitThe satellite is composed of 30 satellites. Together with the previously launched Beidou satellite, it forms a new Beidou navigation system with a total of 55 satellites. Beidou BDS system has the following advantages: first, the space segment adopts a hybrid constellation composed of three kinds of orbit satellites, which has more high orbit satellites, strong anti occlusion ability and more obvious performance characteristics in low latitudes. Second, Beidou system provides navigation signals of multiple frequency points. The combined use of multi frequency signals improves the service accuracy. Our golden beacon (www.bds666. Com) company has developed a military antenna for positioning and navigation according to Beidou's B3 frequency point, which is also used in atmospheric products and meteorological services. Third, Beidou system innovation integrates navigation and communication capabilities, and has a variety of service capabilities such as positioning and navigation timing, satellite based enhancement, ground-based enhancement, precision single point positioning, short message communication and international search and rescue.

The advantage of Beidou BDS (www.bds666. Com) over GPS and other navigation systems is that we have a short message communication system, which is the unique advantage of Beidou. With the assistance of the communication function of "tiantong-1" satellite, the function of Beidou system is more powerful and practical. The new market brought out by Beidou is also a new growth point of China's economy. It can promote the emergence and development of domestic Beidou chips, navigation and positioning industries, facilitate people's lives, increase our national strength and influence, and can also be proud in military industry and national defense.

Second Beidou Positioning and navigation

Navigation and positioning is a branch of the application of wireless communication technology. They all make articles in the transmission, reception, data calculation and signal analysis of microwave and RF signals. The principle of BDS Beidou GPS positioning is as follows: the signal transmitting system is composed of multiple satellites in the sky. The global GPS Beidou user terminal can basically search more than four GPs Beidou satellites in all-weather and all-weather sections. First calculate the distance between one satellite and the user terminal receiver, and then integrate the same type of data of other satellites, You can calculate the specific location of the terminal. Of course, the data of Beidou BDS and GPS can be compatible on one terminal, and the data can also be referenced and corrected. The Beidou GPS module and Beidou GPS antenna of our golden beacon can be compatible and used. It can also be compatible with Russia's GLONASS and Europe's Galileo Galileo systems as needed. Sometimes, the antenna of an intelligent terminal is also compatible with GSM communication signal, FM and other signals.

The gold buoy kinghelm (www.bds666.com) newly developed vehicle GSM Beidou GPS three mode two way antenna can not only be compatible with Beidou and GPS, but also be compatible with GSM communication, breaking the information isolated island of traditional intelligent hardware navigation positioning and communication links, with larger and better application scenarios and good user experience, and also improving product value.

Kinghelm golden beacon R & D and production of GSM communication and Beidou GPS two in one SMA interface vehicle antenna

Based on the basic technologies of microwave and RF, there are other positioning methods, such as ground base station positioning, WiFi Positioning, IP positioning, RFID RF tag positioning, QR code tag positioning, RFID RF tag positioning, Bluetooth Bluetooth positioning, ZigBee positioning, acoustic positioning, AI scene identification positioning, geomagnetic wave positioning and ocean wave positioning, UWB (ultra wide band) wireless broadband positioning and other application technologies. Auxiliary positioning includes A-GPS, acceleration sensor, gyroscope positioning, etc. Sometimes these technologies are used alone, and sometimes a variety of technologies are integrated and cross mixed to increase stability and reliability. In complex and extreme scenes, we usually use one or more of the above technologies to complement each other and reference and correct each other. Our technicians have a deep experience in the high-precision positioning and navigation positioning of military products participated by golden AIDS.

According to different applications, it is generally divided into outdoor positioning technology and indoor positioning technology.

1. There are two kinds of outdoor positioning technologies: Beidou GPS and other satellite positioning technologies, base station IP and A-GPS positioning technologies.

Satellite navigation and positioning technology is a very mature technology, such as the well-known GPS and China's Beidou BDS, as well as the GLONASS GLONASS of Russia and the Galileo Galileo system of Europe. Here we will analyze it together. The principle of satellite positioning technology is the same, which is based on the principle of three-dimensional positioning. Generally speaking, one satellite can define the user's sphere, two satellites can locate the user's circumference, three satellites can locate the user's two points on the circumference, and four satellites can accurately locate the user's position. The difference between several satellite positioning technologies is that their positioning reference satellites are located in different countries, and the countries where they are launched and managed are also different. They are the most widely used technologies that our people are most familiar with. We use smart phones and cars.

Base station IP location technology is to fix the known base station location (IP) of mobile communication and determine the location according to the information of the customer's mobile terminal. It is a widely used independent or auxiliary location measure. Several common technologies are: single base station positioning, multi base station positioning, and multi-mode positioning mixed with other modes. The principle of the base station is that the location IP is known, and the mobile device can calculate the current location of the device by calculating the location of three adjacent base stations.

Let's take a look at the A-GPS positioning technology. From the start of A-GPS positioning to the GPS terminal receiver to find the available Beidou GPS satellite, the process is as follows:

(1) The device obtains the current cell location from the cellular base station (i.e. a coo location);

(2) The device transmits the current cell location to the A-GPS location server in the network through the cellular network;

(3) The a-pgs location server queries the currently available Beidou GPS satellite information (including satellite frequency band, azimuth, elevation and other related information) in the area according to the current cell location, and returns it to the terminal equipment;

(4) The GPS Beidou BDS terminal receiver can quickly find the currently available GPS satellites according to the available satellite information. At this time, the GPS Beidou BDS terminal receiver can normally receive the GPS Beidou satellite signal, and the initialization process is over. The improvement of positioning speed by A-GPS is mainly reflected in this process. Our golden beacon engineers generally call this process hot start. I believe comrades who often drive and use navigation equipment have experience.

These auxiliary positioning methods are used in some special application scenarios. GPS and Beidou BDS have the advantage of no radiation, but the penetration is very weak and can not penetrate the reinforced concrete. Under overpasses or in places with dense buildings, GPS Beidou Positioning will drift when the signal is blocked or reduced. It can not be used indoors or in relatively closed spaces because the principle of satellite navigation and positioning is the same. When the GNS system may be attacked or interfered, and the indoor and underground signals cannot be covered, the supplementary backup of GNS service becomes particularly important. Where the signals of these satellite based systems can not be fully met, some land-based systems need to be deployed as a supplement.

2. Indoor positioning technology (inside non exposed or covered space)

Indoor positioning and navigation technology is also called non exposed or covered space positioning technology. With the popularization of science and technology and the development of the market, the commercial prospect is very broad. Some people have been insisting on making products in this field, but they have not been widely used before due to technical and cost constraints. Recently, indoor positioning technology has become popular again, that is, Apple launched ibeacon technology, which has driven other WiFi Positioning, IP positioning, ZigBee positioning, RFID RF positioning, QR code tag positioning, RFID RF positioning, Bluetooth positioning and wireless broadband UWB positioning technologies, and displayed relevant products and news information in front of everyone, A company in Chengdu, China, is developing the Chonghua positioning backup system, which has independent intellectual property rights. It has something in common with the global first land-based high-precision autonomous pnt navigation technology of locata company of the University of New South Wales, Australia. The technical route should come from the Loran-C system of the previous Americans in the 1990s. Our golden beacon also develops military grade navigation and positioning signal correction antenna based on this system!

Comparison of several indoor navigation technical parameters and their advantages and disadvantages

Third Beidou GPS antenna and RF signal transmission connector, etc

Here we will introduce the antenna of our golden beacon (www.bds666. Com). When Beidou GPS signal is received, our kingholm brand antenna of golden beacon will be used. Signal transmission will use kingholm RF connection wire, coaxial connector and other signal connection products developed and produced by golden beacon. We are very familiar with this piece. The types and names of antennas are classified and named according to the function and application scope, such as TV antenna; Some are according to the shape, such as our golden beacon's hot pepper antenna and paddle antenna in Alibaba; Some are made of materials, such as FRP antenna; Some are based on the scope of application, such as GSM antenna, etc., we will give you the following simple classification.

1. Rod / whip antenna. Rod / whip antenna is generally omnidirectional antenna, that is, 360 ° uniform radiation in the horizontal pattern, that is, it has no directivity, but generally has little gain. This kind of antenna is widely used, and there are not many special requirements when it is used. For example, this kind of antenna is very common, such as home Wi Fi, radio, mobile communication system, station type made in suburban counties and regions, and radio we often listened to when we were young.

2. Ceiling antenna. Ceiling antenna is a kind of antenna of mobile communication system, which is mainly used for indoor signal coverage, such as venue, hotel, office building, cinema, residential building, etc. The white downward protrusion is the antenna body, which radiates the signal outward. The cable connected behind is the feeder, which introduces the signal from the mobile base station to the antenna. Nowadays, the indoor ceiling antenna seen in the market has many shapes and colors, but the purchase and manufacture of its inner core are almost the same. Generally, the antenna will have the brand trademark of China Mobile or China Unicom. You can see which operator's signal is covering the region at a glance.

3. Wall mounted antenna. The wall mounted antenna is mainly installed on the walls of rooms, halls, corridors and other places. It belongs to air dielectric microstrip antenna, which has strong directivity, large gain and beautiful appearance. It is generally used in narrow and long indoor space. When the wall mounted antenna is installed, there shall be no objects in the near area in front of it, and it shall not be facing the window, gate and other signals, which are easy to leak to the outdoor opening. The gain of wall mounted antenna is higher than that of ceiling antenna, generally between 6 ~ 10dB. For example, non-stop toll collection system at high-speed intersection is also one of its major applications.

Top mounted communication antenna in the corridor outside the golden beacon Office

4. Yagi antenna. Yagi antenna is a directional antenna with high gain. It is an end emitting antenna formed by parallel arrangement of an active oscillator (generally converted oscillator), a passive reflector and several passive deflectors. It was invented by Takeshi Yagi and Takeshi Yutian of Tohoku University in Japan, so it is called Yagi antenna. The more units of Yagi antenna, the higher its gain. Generally, Yagi directional antenna with 6 ~ 12 units is used, and its gain can reach 10 ~ 15dB. The utility model has the advantages of high gain, light structure, convenient erection and low price. Yagi antenna is suitable for point-to-point communication or introducing outdoor signals indoors. It is the first choice for outdoor receiving antenna of indoor distribution system. For example, if the indoor mobile phone signal in a certain area is particularly weak and wants to be improved, Yagi antenna is generally selected.

Kinghelm golden beacon R & D and production of RF adapter line, connecting line and other products

5. Base station plate antenna. Base station plate antenna is the most common and important base station antenna, which belongs to a kind of directional antenna. The plate antenna has the advantages of high gain, good sector pattern, small back lobe, convenient depression angle control of vertical pattern, reliable sealing performance and long service life. Its selection and setting are relatively complex. According to the coverage requirements, traffic distribution and anti-interference requirements, it is necessary to strictly adjust the parameters such as dip angle, direction angle, antenna hanging height, antenna diversity distance and isolation distance.

The gain of conventional base station plate antenna is about 14 ~ 17dB. The gain of extended base station plate antenna can reach 16 ~ 19dB. It goes without saying that the length of extended base station plate antenna is twice that of conventional plate antenna, up to about 2.4m.

Beidou GPS antenna RF connector display cabinet developed, produced and sold by golden beacon

6. High gain paraboloid antenna. Due to the good focusing effect of the paraboloid surface, the paraboloid antenna has strong collection ability. The gain of the paraboloid antenna with a diameter of 1.5 m can reach 20 dB. When transmitting, the radar must focus its energy on the direction to be irradiated, and when receiving, it can only receive the echo in the detection direction as far as possible, and distinguish the azimuth and elevation of the target. Therefore, this antenna form is very common in radar or satellite systems. Some paraboloids adopt grid structure, one is to reduce the weight of the antenna, the other is to reduce the wind resistance.

GPS module Beidou antenna ceramic communication antenna FPC antenna series of golden beacon kinghelm

7. Sbx-1 sea based X-band radar antenna, due to the curvature of the earth, the coverage of fixed radar is very limited. The sea giant eye sbx-1 sea based X-band radar consists of many small radomes and a phase array radar antenna weighing 1814 metric tons. This phase array radar antenna needs more than one million watts of power to operate, has more than 30000 sets of transmission and reception T / R modules, covers an area of 384 square meters, and can search and track targets. It can also exchange information with the U.S. missile defense system at Vandenberg Air Force Base in California and Fort Lilly base in Alaska. Both bases have the ability to intercept and shoot down missiles.

More Beidou GPS antenna industry information, please pay attention to the Golden Compass company operates the "Beidou expert" official account, or browse the golden navigation official website www.bds666. COM, if there is product demand, golden beacon will provide one-to-one high-quality service!