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loczytzn
Wysłany: Czw 0:40, 16 Gru 2010
Temat postu: ugg italia TACAN azimuth flight inspection system,
TACAN azimuth flight inspection system, error correction and processing
, The calculation of systematic errors can not be taken directly to the two devices measured by the method, but must be the origin of transformation using the first amendment, and then seek error. * In general, the TACAN ground beacon (device under test) antenna and reference antenna height difference between the small device, and the azimuth of the impact on small, are not required to consider the height difference. The figure \magnetic azimuth, 03 to P relative to \Figure 1 can be established by the following mathematical model: D = [R {+ feet; a 2RlR2COS (l A 2)] / 2 (1), 50 = l of a 3: l of a butterfly 0s-Rl-cos-Ol - R2 a cos02 (2) where △ o is measured relative to benchmark the beacon angle correction device, namely: When the basis for a device measured to determine the value of o3, then: l = 3 a △ (3) where e. Punctuation in the letter of observation measured magnetic bearing reference plane, and the aircraft system under test measured the magnetic azimuth el, as long as under (2) to calculate the correction △ o, then 03 can be obtained through the measured el, which el can be calculated from the measured system error, and its essence is the base equipment and test systems in a beacon origin \Schematic diagram of the horizontal projection of the actual flight test,
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, usually Rl, R2,
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, 02 are selected according to site conditions, can be considered as reference variable, in order to calculate D and △ o,
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, select the e. Calculated as independent variables. For convenience of calculation, refer to a transformation formula: * secret Ming, male, born in 1960, the Navy Director of Communications Office Northern 91,286 troops, the main research directions: the long-term engaged in radio communication,
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, aviation, electronics and automation and control other aspects of the research. · 38 · al ~ co $ () = a aretg-Ji + curse (4) √ l an 'order: fish, generation type (2) may: a n'I /, \ -, ● V · △ = 01 -03 = 01 + arctg and One (5) √ l a 'where o3 = arctg +9 in the calculation,
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, such as Kyrgyzstan, the islands and the range of P and 0, the coordinates of points related to the following formula can be expressed: X1> ; x2 when, 0 <o3 <D cXl <x2, the D c <o3 <2 D c In addition, two reference points when the aircraft entered the area between the magnetic meridian (ie, ON, ON area between two parallel lines), in the 0l and e3 in the corners, there must be a slightly greater than zero, and the other slightly less than 360. Therefore, the difference will produce mutations, this is due to 360. Cycle due. 3 TACAN azimuth error handling system also includes the position error of the system error (cyclic error) and two types of random errors, in general, the laws and the number of system errors can be predicted or calculated, the random error by statistical methods must be used multiple measurements to calculate. 3. I TACAN azimuth error processing system of periodic flight inspection of the measured location data includes periodic error and random error, in terms of random error, according to its error characteristics, the easiest way to eliminate errors is to find the average of multiple measurements value of the mean of the random error tends to zero, through data processing to filter out random errors, and the remaining periodic error is, so many points in each direction compared to the measurement error of the mean periodic error. 3.2 azimuth bearing random periodic error processing errors in the calculated, the system is subtracted from the measured periodic error of the azimuth error, the remaining position error was random error. As we all know, random errors usually be described by the root mean square error, usually expressed by the following formula:: √ or / 1 (5) Fragrance field by a Central Bureau in the company and the CE quality certification assessment center of a sub-center in Chengdu by Central Bureau of Beijing quality certification company and CCQSUKLtd. CE conformity assessment centers, testing and Technology Research Institute is currently setting up in China, \designated testing laboratories. The establishment of two sub-centers will provide the western region ISO9000, ISO14000, OHS18000 such as system certification and CE-K ~ Z_x for. (Rrel :028-84434055, Fax :028-84499033) · 39 ·
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