How to calculate the latitude and longitude of the local area, and how are the latitude and longitud

Set up a pole and keep drawing its shadow, when the shadow is the shortest, the direction of the shadow is the standard north-south direction. Then, when the Sun is due south or north (depending on whether you are in the Northern Hemisphere or the Southern Hemisphere), measure the length of the shadow and pole and calculate the elevation angle of the Sun using trigonometric functions. Then look at the specific date of measurement, it is known that the sun directly hits the equator at the spring or autumn equinox, and the summer solstice or winter solstice directly hits the Tropic of Cancer back to the Tropic of Capricorn, and uses these known conditions and the specific date of the measurement day to interpolate the trigonometric function, and the modified value can be added with the elevation angle of the sun to obtain the local latitude value.

The longitude value can be calculated by looking at the time when the sun is in a north-south direction and the time difference between 12 o'clock on the hour in the local time zone. That's how I organized my classmates from the Astronomical Society to measure when I was in college.

Found a *** for calculating latitude and longitude for the landlord, which can calculate the latitude and longitude in almost all regions of China and around the world.

In giving the landlord two **.

The following ** just click on any location on the map, you can get the latitude and longitude of the area, I hope it will help you.

Check it out here!

1. There are 90 degrees of latitude. The equator is 0 degrees and is arranged towards the poles, with the smaller the circle, the greater the degree. The length of the parallels is different (the farther away from the equator, the shorter the parallels).

2. Longitude: prime meridian.

0° longitude) is east longitude, and the further east, the greater the degree of longitude, until 180° east longitude; West of the prime meridian (0° meridian) is the west longitude, and the further west you go, the greater the degree of longitude until 180° west longitude. The two meridians of 180°E and 180°W coincide. All warp threads are equal in length.

Measure the latitude and longitude of the local area (i.e., geographic coordinates.

The process is as follows:

Anywhere on earth, as long as there is a watch, a bamboo pole, and a tape measure.

You can know the latitude and longitude of the local area. However, the table must be proofread against the country's standard time.

Seepage. 1. Calculate the equinox day: For example, in a certain place in China, the shortest time of the rod shadow is 13:20 at noon, and the ratio of the rod length to the shadow length is 1, then it can be known that the place is 45 ° north latitude (tg = 1), and the ratio of the rod length to the shadow length of 100 ° east longitude (1 hour minus 15 ° from 120 °, 4 minutes minus 1 °) needs to be found in the table, and a special angle is used here.

2. The algorithm for calculating the longitude of the two solstices does not change the latitude in the Northern Hemisphere.

Winter solstice +, summer solstice can be modified by adding or subtracting the correction value on any day.

3. Correction value algorithm: that is, the difference between the number of days from two minutes or two solstices is multiplied by 94 365. For example, February 17, 2013 and March 22, 2013, the spring equinox is 33 days apart, which is the point where the sun shines directly.

At latitude 33 94 365 = so the latitude obtained at noon today is (arctg +, tg = pole length shadow length.

Extended information: Earth's latitude and longitude.

Precautions for Measurements:

1. Astronomical observation method.

2. Time measurement method.

Astronomical observations use the position of the moon in the background stars in the sky after daily rise, and after a series of complex calculations, the approximate longitude can be obtained. The law of measuring time is done by carrying a precise timer.

Record the time at the point of departure and compare it with the time indicated by the current sun, which is the local time, to get the longitude.

Finally, time measurement has been widely used with the invention of the precision timer. However, the lunar measurement method is rarely used because of the very strict requirements for the observation conditions and the complexity of the calculation, and the calculation time is too long.

In addition, with the help of a timer, it is possible to make use of a sextant.

The current position is determined based on the position of a star in the starry sky. By selecting a star, measuring its altitude angle, and looking up the table, the sailor can calculate where the star should be at such an altitude at the current moment, so that he can know which circle he is currently on.

Pick another star and do the same as you can draw another circle at its current position, the two circles have two intersections, but because they are far apart, you can know which of the two intersections is now based on the logbook. If you really can't do it, you can choose another star, and there is only one intersection point in the three circles, and this intersection point is the current position.

Summary. Hello, Geography Longitude Latitude Calculation Formula.

Calculate geographic latitude and longitude.

Longitude - local time - east plus west minus, 15 degrees for 1 hour, 1 degree for 4 minutes.

Calculate latitude – calculated by the formula of the height of the sun at noon;

Latitude difference method: on the same side of the direct point of the sun, the difference in latitude between the two places is how many degrees, and the height of the sun at noon is how many degrees.

Corollary: How many degrees of difference from the latitude difference of the direct point is how many degrees the height of the sun at noon is different from 90°.

The elevation angle of the North Star = the local geographic latitude.

2. Geographical latitude and longitude expression.

How to calculate latitude and longitude.

Hello, the formula for calculating the latitude and longitude of geography calculates the latitude and longitude of the geography and latitude and longitude - calculated in local time - east plus west minus, 15 degrees for 1 hour, 1 degree for 4 minutes. Calculate latitude – calculated by the formula of the height of the sun at noon; Latitude difference method: on the same side of the direct sunlight block, how many degrees of latitude difference between the two places is, how many degrees the height of the sun at noon is different.

Corollary: How many degrees of difference from the latitude difference of the direct point is how many degrees the height of the sun at noon is different from 90°. Polaris elevation and angle of argument = local geographic latitude.

2. Geographical latitude and longitude expression.

What is the problem you are experiencing? You can describe it to me in detail, so that I can better answer for you.

East longitude and north latitude ratio.

How can you count the seconds back to three places?

Because I don't quite understand what you're saying. <>

How can the following 6 and 9 calculate the exact number of seconds.

In this case, he needs to use a very precise positioning instrument.

Through the hand or the source of the shooter is his own mobile phone stupid crack positioning, he can not be positioned, the belt and closure generally need to be accurately located to the next seconds, you need to use a military-grade locator.

Through hand calculation or the locator of his mobile phone, he is not positioned to be round, and generally needs to be accurately located to the next number of seconds, and it is necessary to use a military-grade locator.

Can you explain the algorithm.

1. North latitude, 39 degrees larger; 2. Then multiply the decimal point by 60, and the result is a quiet friend, that is, 55 points; 3. Multiply by 60 again, and the result is, that is, seconds;

You can use this example to calculate its seconds.

Or you can send me the full latitude and longitude above, and then I'll calculate it for you.

The scale is whether the second is equal to 44 seconds or 440 seconds.

Well, what do you mean by that?

Because his latitude and longitude is in the base of 60, it is said to be 44 seconds, and it will not exceed 60.

Well, can you just take a picture of the question and send it to me?

We have to calculate back that the number of seconds of civilian Beidou navigation is 999 seconds.

It's not 999 seconds, it's 60 and the rest of it is minutes.

The ratio is to be calculated back, then I will calculate it for you, it will take a little time, please be patient, thank you for your understanding.

Latitude and longitude 1 degree = 60 minutes = 3600 seconds. So.

1. Longitude, a geographical term, generally refers to the abscissa of the spherical coordinate system, specifically the degree to the east or west of a place on the earth from a north-south line called the prime meridian.

According to international regulations, the longitude at the original site of the Greenwich Observatory in London, the capital of the United Kingdom, is set at 0° longitude, and then extends to the left and right. The time zones are also divided into regions, with a difference of one hour every 15 degrees of longitude. As a basis of geography, longitude is the basic theory for understanding the rotation of the earth and the geographical division of regions, which needs to be carefully and accurately mastered.

2. Latitude can be divided into astronomical latitude, geodetic latitude, and geocentric latitude. Geocentric latitude refers to the line between a point and the earth's sphere and the angle of the earth's equatorial plane, geodetic latitude refers to the angle between the normal of the ground and the equatorial plane, and astronomical latitude refers to the angle between the plumb line direction of the place and the equatorial plane.

When we say latitude, we usually mean the latitude of the earth. Its values range from 0 to 90 degrees. The latitude of a point north of the equator is called north latitude and is denoted as n; The latitude of a point located south of the equator is called south latitude and is denoted as s.

Latitude and longitude is the combined name of latitude and longitude to form a coordinate system. Also known as the geographic coordinate system, it is a spherical coordinate system that uses the spherical surface of three-dimensional space to define the space on the earth, and can mark any position on the earth.

Longitude is the degree to the east or west of a point on Earth that is aligned north of a south hengdou called the prime meridian.

Latitude refers to the line between a point and the center of the Earth's sphere and the surface of the Earth's equatorial stocking, and its value is between 0 and 90 degrees. The latitude of a point located north of the equator is called north latitude and is denoted as n, and the latitude of a point located south of the equator is called southern latitude and denoted as s

Longitude is divided into 360 degrees, with 1 time zone every 15 degrees, of which 0 degrees is called the prime meridian, which is the first place to enter a new day, and then every 1 time zone to the west is 1 hour apart.

1. Calculate two equinox days first: For example, in a certain place in China, the shortest time for the rod shadow is 13:20 at noon, and the ratio of the rod length to the shadow length is 1, then it can be known that the place is 45 ° north latitude (tg = 1), and 100 ° east longitude (from 120 ° in 1 hour minus 15 °, 4 minutes minus 1 °) The ratio of the rod length to the shadow length needs to be checked in the table, and a special angle is used here.

2. The algorithm for calculating the two solstices and longitude remains unchanged The latitude is in the northern hemisphere winter solstice +, and the summer solstice can be corrected by adding or subtracting the correction value on any day.

3. Correction value algorithm: It is the difference between the number of days from two minutes or two solstices multiplied by 94 365For example, on February 17, 2013, the difference between the vernal equinox on March 22, 2013 is 33 days, that is, the direct point of the sun is at 33 94 365 = south latitude.