For such applications, augmentation is required. There are two general classes of augmentation: differential GPS (DGPS) and external sensors/systems. This chapter introduces DGPS. Chapter 9 will ...

Also called a "differential GPS" (DGPS), an augmentation system compensates for those discrepancies by transmitting corrections to the GPS receivers either via satellite or terrestrial radio.

One of the more interesting facets of GPS is that, at least from the receiver’s point-of-view, it’s a fairly passive system. All of the information beamed down from the satellites is out in ...

In this chapter, we examine the properties of the GPS satellite signals, including frequency assignment, modulation format, navigation data, and the generation of PRN codes. This discussion is ...

Using high quality 2D aerial mapping and photorealistic 3D cityscapes from Nearmap ... business tips and product information. The GPS World editorial staff did not create this content.

A differential probe, a device for measuring the voltage between two points in a circuit rather than the voltage between a point and ground, it an extremely useful addition to any electronics bench.

While it’s likely seldom done, some vehicles’ maintenance schedules do include an interval for changing the differential fluid, though perhaps only under “severe service” conditions such ...

I'm PCMag's managing editor for consumer electronics, overseeing an experienced team of analysts covering smart home, home entertainment, wearables, fitness and health tech, and various other ...

Our search for the best GPS trackers favors devices that are easy to operate, especially for younger kids. Other key factors include how comfortable a tracker is to wear and what kind of ...

Getting the best 3D printer for your dream project is key to having it done right. Here's what you need to know. James has been writing about technology for years but has loved it since the early 90s.

A survey reveals that a significant proportion of UK general practitioners (GPs) are integrating generative ... in tasks ranging from documentation to differential diagnosis.