What Is a Handheld GPS?

Handheld GPS refers to the global mobile positioning system. It is a GIS system supported by the mobile Internet and GPS smartphones. It is another new technology hotspot after desktop GIS and WEBGIS. Mobile positioning, mobile MIS, and mobile office Increasingly becoming the urgent needs of enterprises or individuals, mobile GIS is the centralized representative of them, making it easy to obtain information anytime, anywhere. It includes spatial database, GIS server, tile server, GIS client, etc. In the context of mobile Internet and WEB services, in order to facilitate the aggregation and integration of data and applications, industry standards are urgently needed to unify the interfaces and achieve the interconnection and interconnection of various systems or modules. The OGC standard has been widely adopted as a general standard in the GIS field, Implemented on many GIS platforms.

Handheld gps

Handheld GPS refers to the global mobile positioning system, which is supported by the mobile Internet and

The monitored terminal, usually a smart phone with a GPS module, can display the current GPS coordinates on the mobile phone map. The monitored terminal interacts with the server through wireless broadband, and the GPS coordinates and images collected by the monitored terminal can be monitored. , Geometry, attributes, and other information uploaded to the server, you can also obtain similar information on the server, so as to achieve information interaction anytime, anywhere.

The monitoring end accesses the server through the wired or wireless network to obtain the data from the monitored end, so that the server can send information or instructions to the monitored end. The monitoring end can be desktop GIS, WEBGIS, mobile GIS, or even other forms of information platform.

Regardless of the monitored end or the monitoring end, they are clients relative to the server. There are usually two modes of interaction between the client and the server:

1. For socket communication, it is necessary to write the socket server program and the socket client program on the server client separately to define the content format of the transmitted information. This mode has the advantages of high communication efficiency, always online, and easy server information distribution. The disadvantage is that it is not versatile and complicated;

2. Http communication. The server publishes services externally as a WEB service. The client obtains the server's information through the Http request and can upload the information to the server. The advantages of this model are thin clients, good versatility, It has strong scalability and conforms to the SOA architecture idea. The disadvantage is the request-response mode, which is not online in real time and stateless. It is difficult to implement the function of the server actively issuing information.

Which interaction method is selected depends on the needs of the specific project. However, the current mainstream method is more inclined to Http communication, because this method is more general and convenient for system expansion, maintenance, and integration.

In the application of mobile GIS, it is usually necessary to include the contents of mobile MIS and mobile OA to achieve the integration of enterprise information. The industries used are: transportation, public security, fire protection, electric power, urban management, logistics, land, surveying and mapping, environmental protection, communications and forestry, agriculture, marine, etc.

The handheld gps uses high-precision measurement GPS technology, the highest-end system configuration, and provides a comprehensive reference station monitoring center and software application solutions to easily meet your needs with higher, faster, and stronger performance.

The ergonomic integrated design is the most powerful handheld GPS in the industry. It integrates GPRS communication, Bluetooth technology, digital camera, microphone, mass data storage, USB / RS232 port in one, and fully meets your needs.

Provide comprehensive handheld gps application software, compatible with a variety of mainstream gis platform software, to achieve seamless docking of data. At the same time, we customize various industry application functions for you with specific requirements to meet your individual use needs.

Measurement functions: mobile GIS data collection, field mapping, waypoint storage coordinates, calculated length, area angle (measurement of latitude and longitude, altitude) and other field measurement data with dual-coordinate one-button conversion.

Map function: built-in detailed national transportation map, with detailed geographical maps of each area, detailed to villages and towns, can be upgraded and refined for life

Map customization: users can independently upload various general vector maps according to their needs

1. Exclusive vehicle-mounted outdoor cross-border navigation. New cross-border navigation function, professional navigation voice broadcast, no need to constantly look at the navigation interface, you can tell the way by listening. Live voice alarm, more than 550,000 alarm points, updated weekly, safer and more efficient driving. Equipped with car power supply and bracket as standard, fully meet the comprehensive needs of self-driving outdoor enthusiasts.
2. Waterproof and shockproof, excellent field performance IPX7 grade waterproof performance, 1 meter underwater, waterproof within 30 minutes, 1 meter natural drop and drop resistance design, battery life up to 15 hours or more, meeting the harsh requirements of field operations. The 3-inch transflective LCD touch screen is still clearly visible under strong outdoor light.
3. Take GPS photos anytime, anywhere

With 3.2 megapixel camera, 3.2x zoom, auto focus, let you easily record wonderful moments, and automatically save geographic coordinates, just touch the navigation and immediately guide you to find the beautiful place in the photo.
4. Professional navigation engine for easy outdoor experience. The MinSun 3.0 professional navigation engine is adopted for more accurate and reliable positioning. Professional waypoints are marked to provide accurate altitude information. The built-in three-axis electronic compass will not lose direction even without GPS signal.
5. Bluetooth wireless transmission, convenient data sharing Built-in Bluetooth supports the mutual transmission of user data between the same devices, allowing you to complete data sharing without using a PC interface, and friend interaction is more convenient. Additional photo browsing, calendar, sun and moon astronomy, calculator and other functions to provide more convenience for your outdoor work.

One. The main function of handheld GPS.

Positioning ----- Measure the position coordinates of a point.

Navigation guides you to your destination.

Measuring area --- --- measuring irregular large area.

Record track.

two. Main application industries of handheld GPS

Forestry, Agriculture, Geological Communications, Electricity, Water Conservancy, Transportation and Environmental Protection

Meteorological Earthquake Army Scientific Research Institute

three. Application of Handheld GPS in Forestry

Resource monitoring ---

Including special investigation and monitoring of various resources, such as forest resource investigation and monitoring, wild animal and plant resource census, etc.

Disaster warning ---

Used for forest disaster prediction and analysis, such as forest fire analysis and forest pest monitoring.

Planning and Design---

Afforestation, fast-growing and high-yielding forest cultivation, rapid and low-yielding forest transformation planning, tending and cutting update, and mountain closure forestation design.

Decision support---

The 3S system is used to construct and compare a series of decision-making models to provide a scientific basis for forestry macro-decisions.

Handheld GPS in the forestry sector ---

Provincial / city / county forestry bureaus

Afforestation office

Forest Resources Office

Forest Bureau

Fire prevention office

Forest Pest Control Station

Forest Farm

Wildlife Protection Station

four. Application of GPS in agriculture.