To understand the various applications of satellite navigation better, it is necessary to understand how a satellite based navigation system works. Eschewing all high-tech details, an attempt to explain the fundamentals in a layman’s language is certainly a tall order. This write up is based on the US-based GPS system, which is one of the best in service.
The GPS uses 24 active satellites going around the earth all 24 hours of the day. They orbit the earth twice in a day. They orbit at an altitude of 20,000 km above the surface of the earth, inclined to the earth’s equator at 550. This setup ensures that each of them is always in sight of at least half a dozen others while only 3 are required to make an accurate fix of one’s position. This is one of the three segments, the space segment. The second, a ground based segment called the Master Control system is an intricate network of antennas, monitors, and control stations. The third segment is with the receiver which is always with the user.
Triangulation is a trigonometric operation to find out one’s location and one which the old-world navigators used. One would need a map of the area and a compass too. Taking only the very fundamental principles, if one is stranded in, let’s say the wilderness, he has no way to locate himself. The only way the person can fix his position is to locate three landmarks. The location of the person has to be on the intersection of the circles whose centers are the three landmarks and their radii their respective distances between the person and the landmarks.
The case with the satellite and the earth is slightly more complicated. One has to deal with a sphere and three satellites, but the process, however, is quite similar. The GPS signal receiver has to be on the intersection of the perimeter of three spheres of radius 20,000 km, which is the orbital distances of the satellites. This places the receiver at one specific point, as the other possible point would be in air or under an ocean. The actual orbital distance is calculated from the time the signals take to reach the receiver from the satellite. Their velocity is the velocity of radio waves which is the velocity of light, 300,000 km/s. Various corrections are applied for interference in the stratosphere, ionosphere and the earth’s atmosphere. The rest of the calculations depends on the application and are besides these and is done in the signal receiver.
Irrespective of whether you’re starting a charitable organization, local store, or just a personal blog on the Internet, you need to create your brand. But, that’s not just it. Creating a brand is no piece of cake; it requires hours of research, a well-drawn out plan, and, most importantly, a logo. A logo is not just something that will go on your merchandise but an essential part of what your brand is trying to be. It is a graphical representation of everything that the company stands for.
So, how do you do all this and more with your logo, especially if you’re on a tight budget? Well, mentioned here are a few tips to help you create your logo design completely free of cost:
Your logo speaks volumes about your business. It’s your brand’s visual identity, and it represents the innovative minds of the creators. So, designing a perfect logo is crucial. And luckily, today, you don’t need to spend thousands or even hundreds of dollars to develop a great logo for your company. There are tons of amazing websites where you can easily create the best logo design for free. If you’re looking for one such website, check out our top selection of free logo-making online platforms.
Canva
Canva is one of the best websites to create not just a free logo design and flyers, business cards, invitations, and a lot more. The drag-and-drop interface of the website makes logo designing a simple and fun task, even for beginners. You can choose from over 100 different logo templates, and explore Canva’s vast library of free elements to add to your design. You can play around with the text, colors, fonts, and more until you’re happy with it.
Wix Logo Maker
Wix Logo Maker is a popular tool to create a logo design for free in minutes. All you need to do is answer a few simple questions about your brand and personal style, and its intelligent logo maker tool will come up with a design that might be right for your business. But if you don’t like what the website produces, you can customize and create your own unique design.
Tailor Brands
Tailor Brands is among the finest design tools that can help you create an ideal logo for your brand for free. It’s perfect for someone who has no expertise in designing but still wishes to make a professional business logo. To get started, enter some basic details about your company and choose your design preferences. The tool runs on AI algorithms, so it will instantly come up with a nearly perfect design. You can later customize the font and other aspects of the design based on your preferences.
Hatchful
Hatchful is a user-friendly logo maker tool from Shopify. You can choose from hundreds of varied templates, icons, and color combinations, and customize them to get what you exactly want finally. Similar to other logo-making websites in this list, you need no experience to get started with Hatchful. After you’re done with the designing part, you can download high-quality image files optimized for various purposes, such as social media, business cards, and merchandise.