NAVICIONO

NavIC ionospheric coefficients parameters

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7

This log contains NavIC ionospheric coefficients parameters. Ionospheric error correction for single frequency (L5) users of the NavIC are provided through a set of eight coefficients. The correction coefficients are:

  • 4 Alpha Coefficients (αn; n=0,1,2,3)

    These are the coefficients of the cubic polynomial representing the amplitude of the positive cosine curve in the cosine model approximation of ionospheric delay.

  • 4 Beta Coefficients (βn; n=0,1,2,3)

    These are the coefficients of the cubic polynomial representing the period of the positive cosine curve in the cosine model approximation of ionospheric delay.

Message ID: 2124

Log Type: Asynch

Recommended Input:

log navicionoa onchanged

ASCII Example:

#NAVICIONOA,COM1,0,92.5,SATTIME,1944,166272.000,02000020,56c0,32768;5,2.980232238769531e‑08,3.874301910400390e‑07,‑2.562999725341796e‑06,‑7.510185241699216e‑06,558.0,168.0,‑2286.0,2286.0,0*2b250bbd

Field

Field Type

Description

Format

Binary Bytes

Binary Offset

1

Log header

NAVICIONO header

For information about log headers, see ASCII, Abbreviated ASCII or Binary.

-

H

0

2

PRN

Satellite Identifier of the transmitting NavIC SV

Ulong

4

H

3

Alpha 0

Alpha parameter constant term

Double

8

H+4

4

Alpha 1

Alpha parameter 1st order term

Double

8

H+12

5

Alpha 2

Alpha parameter 2nd order term

Double

8

H+20

6

Alpha 3

Alpha parameter 3rd order term

Double

8

H+28

7

Beta 0

Beta parameter constant term

Double

8

H+36

8

Beta 1

Beta parameter 1st order term

Double

8

H+44

9

Beta 2

Beta parameter 2nd order term

Double

8

H+52

10

Beta 3

Beta parameter 3rd order term

Double

8

H+60

11

Spare

Ulong

4

H+68

12

xxxx

32-bit CRC (ASCII and Binary only)

Hex

4

H+72

13

[CR][LF]

Sentence terminator (ASCII only)

-

-

-