GPS - đường dẫn quán tính và hội nhập P1

... position [63, 96, 98]. 1.2.2 Local-Area Differential GPS Local-area differential GPS (LAGPS) is a form of DGPS in which the user's GPS receiver also receives real-time pseudorange and, possibly, ... DIFFERENTIAL AND AUGMENTED GPS 1.2.1 Differential GPS Differential GPS (DGPS) is a technique for reducing the error in GPS- derived positions by using additional data from a refe...

Ngày tải lên: 28/10/2013, 22:15

... Andrews Copyright # 2001 John Wiley & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 There are other ground-based radiowave signal systems suitable for use as part of an ... by LORAN-C signals produced by three or more long- range navigation (LORAN) signal sources positioned at ®xed, known locations for outside-the-building location determination. A LOR...

Ngày tải lên: 28/10/2013, 22:15

... & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 3.5.4 Pseudorange Measurements Using Carrier Phase Although pseudorange measurements using the C=A-code are the most commonly employed, ... is called the Y-code. The Y-code is formed by multiplying the P-code by an encrypting code called the W-code. The W-code is a random-looking sequence of chips that o...

Ngày tải lên: 07/11/2013, 19:15

... # 2001John Wiley & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 can be calculated in military receivers by comparing the P-code pseudorange measurements obtained on the ... modulation of the P-code by an encrypting code known as the W-code. The W-code has a slower chipping rate than the P-code; there are precisely 20 P-code chips per W-code chip. Nor...

Ngày tải lên: 07/11/2013, 19:15

... Weill, Angus P. Andrews Copyright # 2001 John Wiley & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 pseudorange error can be greater than either an L 1 or L 2 carrier wavelength, ... waveform t t τ Cross-correlation with received C/A-code Cross-correlation with received C/A-code Multipath-mitigating reference code waveform τ 0 T c T c – T c – 0 T c T...

Ngày tải lên: 07/11/2013, 19:15

... Weill, Angus P. Andrews Copyright # 2001 John Wiley & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 where v is the vector velocity of the body in the rotating coordinate frame, ... the steam catapult. 4. GPS- aided alignment, using position matching with GPS to estimate the alignment variables. It is an integral part of integrated GPS= INS impleme...

Ngày tải lên: 15/12/2013, 03:15

... locally level earth-®xed coordinates, even though the sensors measure components in vehicle-body-®xed coordinates. In similar fashion, the Kalman ®lter state variables for GPS- only navigation must ... 7.59 is the discrete-time dynamic system model corresponding to the continuous-time dynamic system model of Eq. 7.51. The matrix F kÀ1 (de®ned in Eq. 7.60)in the discrete-time model (Eq. 7.59)...

Ngày tải lên: 15/12/2013, 03:15

... Weill, Angus P. Andrews Copyright # 2001 John Wiley & Sons, Inc. Print ISBN 0-4 7 1-3 5032-X Electronic ISBN 0-4 7 1-2 007 1-9 3. Exponential decay of the autocorrelation functions is a reasonable indication of ... multiply-and-accumulate operations per up- date cycle [10, p. 104, plus decorrelation], and that of the predictor step (temporal update) will be on the order of n2n...

Ngày tải lên: 15/12/2013, 03:15

... DETERMINATION 283 9.2 LADGPS, WADGPS, AND WAAS 9.2.1 Description of Local-Area DGPS (LADGPS) LADGPS is a form of DGPS in which the user's GPS receiver receives real-time pseudorange and, possibly, ... s 2 H T H À1 : 284 DIFFERENTIAL GPS 9 Differential GPS 9.1 INTRODUCTION Differential GPS (DGPS) is a technique for reducing the error in GPS- derived positions by using additiona...

Ngày tải lên: 15/12/2013, 03:15