The world of satellite navigation GPS navigators is truly huge. Today there are about one and a half thousand different models, there is no possibility and need to consider all of them. From the equipment on the market, the consumer can always choose the most suitable GPS navigators for their needs.
What are GPS satellite navigators, classification and design of GPS navigators.
To quickly navigate in the modern world of GPS navigators, we will divide them into conditionally selected groups formed by the following signs.
Areas of use.
Cartographic Support Level.
The design of GPS navigators.
In this group, we highlight the following six types of GPS navigators.
This group includes compact, durable and lightweight devices with a weight of 100 to 300 grams, which, when used, are convenient to hold in your hand. Devices can be placed in pockets, waist pouch and the like. Many have a waterproof design according to IEC 529 with a degree of protection IPX4, IPX6, IPX7 and some even swim in the water, for example Garmin GPS 72/76, Magellan SporTrack and Meridian.
The IPX7 standard indicator that is most often applied to navigators provides for the device to remain operational after immersing it in water to a depth of 1 meter for 30 minutes. This means that the device is not afraid of heavy rain and will withstand accidental bathing, while it is not unimportant that many of them do not drown. However, protection does not apply to the battery compartment.
Water access protection.
Defined by the standard of the International Electrotechnical Commission IEC 60529. It provides the following degrees of protection for waterproof devices: IPX2 protection against fog and moisture, IPX4 protection against sprayed water, rain, IPX5 protection against water jets sprayed from all sides, test time 3 minutes, IPX6 protection from powerful water jets, test time 3 minutes, IPX7 temporary flooding for 30 minutes to a depth of 1 meter, IPX8 continuous flooding.
Operating temperature range of GPS navigators.
A typical operating temperature range for GPS navigators is from minus 15 to plus 70 degrees. For some devices it is smaller, for example for Magellan navigators it is minus 10 to plus 60 degrees.
Features of portable GPS navigators.
The display of portable GPS navigators, as a rule, has an adjustable backlight for working in the dark. They provide autonomous power from built-in batteries. The miniature models Forerunner and Foretrex are designed for athletes and are worn on the wrist like a watch.
Semi-stationary GPS navigators.
The GPS navigators included in this group have large screens and have larger sizes and weigh up to 0.5 kg. They can be used as wearable personally, as they have built-in power. It is possible to place them on the panels of yachts, boats and cars, where they are installed using special brackets. The value and ease of use of this group of devices increase if they provide for the use of an external antenna and external power, that is, there are necessary connectors.
Stationary GPS Navigators.
This group of devices is distinguished by somewhat large sizes and weight, from 400 grams to 2.3 kg. Their kit must contain mounts for installation and adapters for external power. As a rule, they do not have power from internal batteries. Many devices in this group have a large display and a wide range of functionality.
Built-in GPS Navigators.
GPS receivers are successfully integrated into various mobile devices, personal digital assistants and echo sounders, the latter being combined devices. Among the used handheld personal computers with navigators, we point out two modifications of the navigation equipment used in them. In the first of these, a GPS receiver is built directly into the housing. In the second modification, the GPS receiver is structurally designed as a cradle (holder).
Computers and GPS Receivers.
The specified group of devices includes miniature GPS receivers designed for connection to personal computers and laptops. They can work with almost any navigation software installed on your computer. Most models have a built-in antenna or are equipped with a remote antenna. The GPS receiver communicates with the PC via the universal interfaces USB, RS-232, Bluetooth, Compact Flash, PCMCIA and SDIO.
Modular Receivers (OEM).
Miniature modular receivers are GPS-coordinates, designed to be embedded in various mobile equipment. They belong to the class of equipment known as OEM Original Equipment Manufacture. The scope of their application is to provide navigation in the car, wireless communication devices, marine instruments, cartography and geodesy. Despite the miniature design, they are full-fledged 8-12-channel receivers, have high sensitivity and, in some cases, a protected case. Have a weight of several tens to one hundred grams.
Based on materials from the book All About GPS Navigators.
Naiman V.S., Samoilov A.E., Ilyin N.R., Sheinis A.I..