source: ntrip/trunk/BNC/src/RTCM3/ephEncoder.cpp@ 8813

Last change on this file since 8813 was 8813, checked in by stuerze, 5 years ago

minor format changes
File size: 16.9 KB
Line 
1
2#include "ephEncoder.h"
3
4using namespace std;
5
6
7// build up RTCM3 for GPS
8////////////////////////////////////////////////////////////////////////////
9int t_ephEncoder::RTCM3(const t_ephGPS& eph, unsigned char *buffer) {
10
11 unsigned char *startbuffer = buffer;
12 buffer= buffer+3;
13 int size = 0;
14 int numbits = 0;
15 unsigned long long bitbuffer = 0;
16 int ura = indexFromAccuracy(eph._ura, eph.type());
17 int L5Flag, SFlag;
18
19 if (eph.type() == t_eph::QZSS) {
20 GPSADDBITS(12, 1044)
21 GPSADDBITS(4, eph._prn.number())
22 GPSADDBITS(16, static_cast<int>(eph._TOC.gpssec())>>4)
23 GPSADDBITSFLOAT(8, eph._clock_driftrate, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<25))
24 GPSADDBITSFLOAT(16, eph._clock_drift, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<13))
25 GPSADDBITSFLOAT(22, eph._clock_bias, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
26 GPSADDBITS(8, eph._IODE)
27 GPSADDBITSFLOAT(16, eph._Crs, 1.0/static_cast<double>(1<<5))
28 GPSADDBITSFLOAT(16, eph._Delta_n, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
29 GPSADDBITSFLOAT(32, eph._M0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
30 GPSADDBITSFLOAT(16, eph._Cuc, 1.0/static_cast<double>(1<<29))
31 GPSADDBITSFLOAT(32, eph._e, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
32 GPSADDBITSFLOAT(16, eph._Cus, 1.0/static_cast<double>(1<<29))
33 GPSADDBITSFLOAT(32, eph._sqrt_A, 1.0/static_cast<double>(1<<19))
34 GPSADDBITS(16, static_cast<int>(eph._TOEsec)>>4)
35 GPSADDBITSFLOAT(16, eph._Cic, 1.0/static_cast<double>(1<<29))
36 GPSADDBITSFLOAT(32, eph._OMEGA0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
37 GPSADDBITSFLOAT(16, eph._Cis, 1.0/static_cast<double>(1<<29))
38 GPSADDBITSFLOAT(32, eph._i0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
39 GPSADDBITSFLOAT(16, eph._Crc, 1.0/static_cast<double>(1<<5))
40 GPSADDBITSFLOAT(32, eph._omega, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
41 GPSADDBITSFLOAT(24, eph._OMEGADOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
42 GPSADDBITSFLOAT(14, eph._IDOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
43 GPSADDBITS(2,eph._L2Codes)
44 GPSADDBITS(10, eph._TOC.gpsw())
45 GPSADDBITS(4, ura)
46 GPSADDBITS(6, eph._health)
47 GPSADDBITSFLOAT(8, eph._TGD, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
48 GPSADDBITS(10, eph._IODC)
49 GPSADDBITS(1, eph._fitInterval)
50 GPSADDBITS(3, 0) /* padding */
51 } else if (eph.type() == t_eph::IRNSS) {
52 GPSADDBITS(12, 29)
53 GPSADDBITS(6, eph._prn.number())
54 GPSADDBITS(10, eph._TOC.gpsw())
55 GPSADDBITSFLOAT(22, eph._clock_bias, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
56 GPSADDBITSFLOAT(16, eph._clock_drift, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<13))
57 GPSADDBITSFLOAT(8, eph._clock_driftrate, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<25))
58 GPSADDBITS(4, ura)
59 GPSADDBITS(16, static_cast<int>(eph._TOC.gpssec())>>4)
60 GPSADDBITSFLOAT(8, eph._TGD, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
61 GPSADDBITSFLOAT(22, eph._Delta_n, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<11))
62 GPSADDBITS(8, eph._IODE) // Issue Of Data Ephemeris and Clock
63 GPSADDBITS(10, 0) /* padding */
64 if (eph._health == 0.0) {
65 L5Flag = 0;
66 SFlag = 0;
67 } else if (eph._health == 1.0) {
68 L5Flag = 0;
69 SFlag = 1;
70 } else if (eph._health == 2.0) {
71 L5Flag = 1;
72 SFlag = 0;
73 } else if (eph._health == 3.0) {
74 L5Flag = 1;
75 SFlag = 1;
76 }
77 GPSADDBITS(1, L5Flag)
78 GPSADDBITS(1, SFlag)
79 GPSADDBITSFLOAT(15, eph._Cuc, 1.0/static_cast<double>(1<<28))
80 GPSADDBITSFLOAT(15, eph._Cus, 1.0/static_cast<double>(1<<28))
81 GPSADDBITSFLOAT(15, eph._Cic, 1.0/static_cast<double>(1<<28))
82 GPSADDBITSFLOAT(15, eph._Cis, 1.0/static_cast<double>(1<<28))
83 GPSADDBITSFLOAT(15, eph._Crc, 1.0/static_cast<double>(1<< 4))
84 GPSADDBITSFLOAT(15, eph._Crs, 1.0/static_cast<double>(1<< 4))
85 GPSADDBITSFLOAT(14, eph._IDOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
86 GPSADDBITSFLOAT(32, eph._M0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
87 GPSADDBITS(16, static_cast<int>(eph._TOEsec)>>4)
88 GPSADDBITSFLOAT(32, eph._e, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
89 GPSADDBITSFLOAT(32, eph._sqrt_A, 1.0/static_cast<double>(1<<19))
90 GPSADDBITSFLOAT(32, eph._OMEGA0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
91 GPSADDBITSFLOAT(32, eph._omega, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
92 GPSADDBITSFLOAT(22, eph._OMEGADOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<11))
93 GPSADDBITSFLOAT(32, eph._i0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
94 GPSADDBITS(2, 0) /* padding */
95 GPSADDBITS(2, 0) /* padding */
96 } else {
97 GPSADDBITS(12, 1019)
98 GPSADDBITS(6,eph._prn.number())
99 GPSADDBITS(10, eph._TOC.gpsw())
100 GPSADDBITS(4, ura)
101 GPSADDBITS(2,eph._L2Codes)
102 GPSADDBITSFLOAT(14, eph._IDOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
103 GPSADDBITS(8, eph._IODE)
104 GPSADDBITS(16, static_cast<int>(eph._TOC.gpssec())>>4)
105 GPSADDBITSFLOAT(8, eph._clock_driftrate, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<25))
106 GPSADDBITSFLOAT(16, eph._clock_drift, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<13))
107 GPSADDBITSFLOAT(22, eph._clock_bias, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
108 GPSADDBITS(10, eph._IODC)
109 GPSADDBITSFLOAT(16, eph._Crs, 1.0/static_cast<double>(1<<5))
110 GPSADDBITSFLOAT(16, eph._Delta_n, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
111 GPSADDBITSFLOAT(32, eph._M0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
112 GPSADDBITSFLOAT(16, eph._Cuc, 1.0/static_cast<double>(1<<29))
113 GPSADDBITSFLOAT(32, eph._e, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
114 GPSADDBITSFLOAT(16, eph._Cus, 1.0/static_cast<double>(1<<29))
115 GPSADDBITSFLOAT(32, eph._sqrt_A, 1.0/static_cast<double>(1<<19))
116 GPSADDBITS(16, static_cast<int>(eph._TOEsec)>>4)
117 GPSADDBITSFLOAT(16, eph._Cic, 1.0/static_cast<double>(1<<29))
118 GPSADDBITSFLOAT(32, eph._OMEGA0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
119 GPSADDBITSFLOAT(16, eph._Cis, 1.0/static_cast<double>(1<<29))
120 GPSADDBITSFLOAT(32, eph._i0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
121 GPSADDBITSFLOAT(16, eph._Crc, 1.0/static_cast<double>(1<<5))
122 GPSADDBITSFLOAT(32, eph._omega, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
123 GPSADDBITSFLOAT(24, eph._OMEGADOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
124 GPSADDBITSFLOAT(8, eph._TGD, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
125 GPSADDBITS(6, eph._health)
126 GPSADDBITS(1, eph._L2PFlag)
127 GPSADDBITS(1, eph._fitInterval)
128 }
129
130 startbuffer[0]=0xD3;
131 startbuffer[1]=(size >> 8);
132 startbuffer[2]=size;
133 unsigned long i = CRC24(size+3, startbuffer);
134 buffer[size++] = i >> 16;
135 buffer[size++] = i >> 8;
136 buffer[size++] = i;
137 size += 3;
138 return size;
139}
140
141// build up RTCM3 for GLONASS
142////////////////////////////////////////////////////////////////////////////
143int t_ephEncoder::RTCM3(const t_ephGlo& eph, unsigned char *buffer)
144{
145
146 int size = 0;
147 int numbits = 0;
148 long long bitbuffer = 0;
149 unsigned char *startbuffer = buffer;
150 buffer= buffer+3;
151
152 GLONASSADDBITS(12, 1020)
153 GLONASSADDBITS(6, eph._prn.number())
154 GLONASSADDBITS(5, 7+eph._frequency_number)
155 GLONASSADDBITS(1, eph._almanac_health)
156 GLONASSADDBITS(1, eph._almanac_health_availablility_indicator)
157 GLONASSADDBITS(2, eph._P1)
158 int tki = static_cast<int>(eph._tki)+3*60*60;
159 if (tki > 86400) {tki -= 86400;}
160 GLONASSADDBITS(5, static_cast<int>(tki)/(60*60))
161 GLONASSADDBITS(6, (static_cast<int>(tki)/60)%60)
162 GLONASSADDBITS(1, (static_cast<int>(tki)/30)%30)
163 GLONASSADDBITS(1, eph._health)
164 GLONASSADDBITS(1, eph._P2)
165 unsigned long long timeofday = (static_cast<int>(eph._tt.gpssec()+3*60*60-eph._gps_utc)%86400);
166 GLONASSADDBITS(7, timeofday/60/15)
167 GLONASSADDBITSFLOATM(24, eph._x_velocity*1000, 1000.0/static_cast<double>(1<<20))
168 GLONASSADDBITSFLOATM(27, eph._x_pos*1000, 1000.0/static_cast<double>(1<<11))
169 GLONASSADDBITSFLOATM(5, eph._x_acceleration*1000, 1000.0/static_cast<double>(1<<30))
170 GLONASSADDBITSFLOATM(24, eph._y_velocity*1000, 1000.0/static_cast<double>(1<<20))
171 GLONASSADDBITSFLOATM(27, eph._y_pos*1000, 1000.0/static_cast<double>(1<<11))
172 GLONASSADDBITSFLOATM(5, eph._y_acceleration*1000, 1000.0/static_cast<double>(1<<30))
173 GLONASSADDBITSFLOATM(24, eph._z_velocity*1000, 1000.0/static_cast<double>(1<<20))
174 GLONASSADDBITSFLOATM(27,eph._z_pos*1000, 1000.0/static_cast<double>(1<<11))
175 GLONASSADDBITSFLOATM(5, eph._z_acceleration*1000, 1000.0/static_cast<double>(1<<30))
176 GLONASSADDBITS(1, eph._P3)
177 GLONASSADDBITSFLOATM(11, eph._gamma, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<10))
178 GLONASSADDBITS(2, eph._M_P) /* GLONASS-M P */
179 GLONASSADDBITS(1, eph._M_l3) /* GLONASS-M ln(3) */
180 GLONASSADDBITSFLOATM(22, eph._tau, 1.0/static_cast<double>(1<<30))
181 GLONASSADDBITSFLOATM(5, eph._M_delta_tau, 1.0/static_cast<double>(1<<30)) /* GLONASS-M delta tau */
182 GLONASSADDBITS(5, eph._E)
183 GLONASSADDBITS(1, eph._M_P4) /* GLONASS-M P4 */
184 GLONASSADDBITS(4, eph._M_FT) /* GLONASS-M FT */
185 GLONASSADDBITS(11, eph._M_NT) /* GLONASS-M NT */
186 GLONASSADDBITS(2, eph._M_M) /* GLONASS-M active? */
187 GLONASSADDBITS(1, eph._additional_data_availability) /* GLONASS additional data */
188 GLONASSADDBITS(11, eph._NA) /* GLONASS NA */
189 GLONASSADDBITSFLOATM(32, eph._tauC, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1)) /* GLONASS tau C */
190 GLONASSADDBITS(5, eph._M_N4) /* GLONASS-M N4 */
191 GLONASSADDBITSFLOATM(22, eph._M_tau_GPS, 1.0/static_cast<double>(1<<30)) /* GLONASS-M tau GPS */
192 GLONASSADDBITS(1, eph._M_l5) /* GLONASS-M ln(5) */
193 GLONASSADDBITS(7, 0) /* Reserved */
194
195 startbuffer[0]=0xD3;
196 startbuffer[1]=(size >> 8);
197 startbuffer[2]=size;
198 unsigned long i = CRC24(size+3, startbuffer);
199 buffer[size++] = i >> 16;
200 buffer[size++] = i >> 8;
201 buffer[size++] = i;
202 size += 3;
203 return size;
204}
205
206// build up RTCM3 for Galileo
207////////////////////////////////////////////////////////////////////////////
208int t_ephEncoder::RTCM3(const t_ephGal& eph, unsigned char *buffer) {
209 int size = 0;
210 int numbits = 0;
211 long long bitbuffer = 0;
212 unsigned char *startbuffer = buffer;
213 buffer= buffer+3;
214
215 int SISA = indexFromAccuracy(eph._SISA, eph.type());
216
217 GALILEOADDBITS(12, eph._inav ? 1046 : 1045)
218 GALILEOADDBITS(6, eph._prn.number())
219 GALILEOADDBITS(12, eph._TOC.galw())
220 GALILEOADDBITS(10, eph._IODnav)
221 GALILEOADDBITS(8, SISA)
222 GALILEOADDBITSFLOAT(14, eph._IDOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
223 GALILEOADDBITS(14, eph._TOC.gpssec()/60)
224 GALILEOADDBITSFLOAT(6, eph._clock_driftrate, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<29))
225 GALILEOADDBITSFLOAT(21, eph._clock_drift, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<16))
226 GALILEOADDBITSFLOAT(31, eph._clock_bias, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<4))
227 GALILEOADDBITSFLOAT(16, eph._Crs, 1.0/static_cast<double>(1<<5))
228 GALILEOADDBITSFLOAT(16, eph._Delta_n, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
229 GALILEOADDBITSFLOAT(32, eph._M0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
230 GALILEOADDBITSFLOAT(16, eph._Cuc, 1.0/static_cast<double>(1<<29))
231 GALILEOADDBITSFLOAT(32, eph._e, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
232 GALILEOADDBITSFLOAT(16, eph._Cus, 1.0/static_cast<double>(1<<29))
233 GALILEOADDBITSFLOAT(32, eph._sqrt_A, 1.0/static_cast<double>(1<<19))
234 GALILEOADDBITS(14, eph._TOEsec/60)
235 GALILEOADDBITSFLOAT(16, eph._Cic, 1.0/static_cast<double>(1<<29))
236 GALILEOADDBITSFLOAT(32, eph._OMEGA0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
237 GALILEOADDBITSFLOAT(16, eph._Cis, 1.0/static_cast<double>(1<<29))
238 GALILEOADDBITSFLOAT(32, eph._i0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
239 GALILEOADDBITSFLOAT(16, eph._Crc, 1.0/static_cast<double>(1<<5))
240 GALILEOADDBITSFLOAT(32, eph._omega, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
241 GALILEOADDBITSFLOAT(24, eph._OMEGADOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
242 GALILEOADDBITSFLOAT(10, eph._BGD_1_5A, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<2))
243 if(eph._inav) {
244 GALILEOADDBITSFLOAT(10, eph._BGD_1_5B, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<2))
245 GALILEOADDBITS(2, static_cast<int>(eph._E5bHS))
246 GALILEOADDBITS(1, eph._e5bDataInValid ? 1 : 0)
247 GALILEOADDBITS(2, static_cast<int>(eph._E1_bHS))
248 GALILEOADDBITS(1, eph._e1DataInValid ? 1 : 0)
249 } else {
250 GALILEOADDBITS(2, static_cast<int>(eph._E5aHS))
251 GALILEOADDBITS(1, eph._e5aDataInValid ? 1 : 0)
252 }
253
254 GALILEOADDBITS((eph._inav ? 2 : 7), 0)
255
256 startbuffer[0]=0xD3;
257 startbuffer[1]=(size >> 8);
258 startbuffer[2]=size;
259 unsigned long i = CRC24(size+3, startbuffer);
260 buffer[size++] = i >> 16;
261 buffer[size++] = i >> 8;
262 buffer[size++] = i;
263 size += 3;
264 return size;
265}
266
267// build up RTCM3 for SBAS
268////////////////////////////////////////////////////////////////////////////
269int t_ephEncoder::RTCM3(const t_ephSBAS& eph, unsigned char* buffer) {
270 int size = 0;
271 int numbits = 0;
272 long long bitbuffer = 0;
273 unsigned char *startbuffer = buffer;
274 buffer= buffer+3;
275
276 int ura = indexFromAccuracy(eph._ura, eph.type());
277 SBASADDBITS(12, 1043)
278 SBASADDBITS(6, eph._prn.number()-20)
279 SBASADDBITS(8, eph._IODN)
280 SBASADDBITS(13, static_cast<int>(eph._TOC.daysec())>>4)
281 SBASADDBITS(4, ura)
282 SBASADDBITSFLOAT(30, eph._x_pos, 0.08)
283 SBASADDBITSFLOAT(30, eph._y_pos, 0.08)
284 SBASADDBITSFLOAT(25, eph._z_pos, 0.4)
285 SBASADDBITSFLOAT(17, eph._x_velocity, 0.000625)
286 SBASADDBITSFLOAT(17, eph._y_velocity, 0.000625)
287 SBASADDBITSFLOAT(18, eph._z_velocity, 0.004)
288 SBASADDBITSFLOAT(10, eph._x_acceleration, 0.0000125)
289 SBASADDBITSFLOAT(10, eph._y_acceleration, 0.0000125)
290 SBASADDBITSFLOAT(10, eph._z_acceleration, 0.0000625)
291 SBASADDBITSFLOAT(12, eph._agf0, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
292 SBASADDBITSFLOAT(8, eph._agf1, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<10))
293 SBASADDBITS(2,0);
294
295 startbuffer[0]=0xD3;
296 startbuffer[1]=(size >> 8);
297 startbuffer[2]=size;
298 unsigned long i = CRC24(size+3, startbuffer);
299 buffer[size++] = i >> 16;
300 buffer[size++] = i >> 8;
301 buffer[size++] = i;
302 size += 3;
303 return size;
304}
305
306// build up RTCM3 for BDS
307////////////////////////////////////////////////////////////////////////////
308int t_ephEncoder::RTCM3(const t_ephBDS& eph, unsigned char* buffer) {
309 int size = 0;
310 int numbits = 0;
311 long long bitbuffer = 0;
312 unsigned char *startbuffer = buffer;
313 buffer= buffer+3;
314
315 int URA = indexFromAccuracy(eph._URA, eph.type());
316 BDSADDBITS(12, RTCM3ID_BDS)
317 BDSADDBITS(6, eph._prn.number())
318 BDSADDBITS(13, eph._TOC.bdsw())
319 BDSADDBITS(4, URA);
320 BDSADDBITSFLOAT(14, eph._IDOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
321 BDSADDBITS(5, eph._AODE)
322 BDSADDBITS(17, static_cast<int>(eph._TOC.bdssec())>>3)
323 BDSADDBITSFLOAT(11, eph._clock_driftrate, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<30)/static_cast<double>(1<<6))
324 BDSADDBITSFLOAT(22, eph._clock_drift, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<20))
325 BDSADDBITSFLOAT(24, eph._clock_bias, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
326 BDSADDBITS(5, eph._AODC)
327 BDSADDBITSFLOAT(18, eph._Crs, 1.0/static_cast<double>(1<<6))
328 BDSADDBITSFLOAT(16, eph._Delta_n, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
329 BDSADDBITSFLOAT(32, eph._M0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
330 BDSADDBITSFLOAT(18, eph._Cuc, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
331 BDSADDBITSFLOAT(32, eph._e, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<3))
332 BDSADDBITSFLOAT(18, eph._Cus, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
333 BDSADDBITSFLOAT(32, eph._sqrt_A, 1.0/static_cast<double>(1<<19))
334 BDSADDBITS(17, static_cast<int>(eph._TOE.bdssec())>>3)
335 BDSADDBITSFLOAT(18, eph._Cic, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
336 BDSADDBITSFLOAT(32, eph._OMEGA0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
337 BDSADDBITSFLOAT(18, eph._Cis, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
338 BDSADDBITSFLOAT(32, eph._i0, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
339 BDSADDBITSFLOAT(18, eph._Crc, 1.0/static_cast<double>(1<<6))
340 BDSADDBITSFLOAT(32, eph._omega, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<1))
341 BDSADDBITSFLOAT(24, eph._OMEGADOT, M_PI/static_cast<double>(1<<30)/static_cast<double>(1<<13))
342 BDSADDBITSFLOAT(10, eph._TGD1, 0.0000000001)
343 BDSADDBITSFLOAT(10, eph._TGD2, 0.0000000001)
344 BDSADDBITS(1, eph._SatH1)
345 BDSADDBITS(1, 0) /* reserved bit, fill up 8 bits */
346
347 startbuffer[0]=0xD3;
348 startbuffer[1]=(size >> 8);
349 startbuffer[2]=size;
350 unsigned long i = CRC24(size+3, startbuffer);
351 buffer[size++] = i >> 16;
352 buffer[size++] = i >> 8;
353 buffer[size++] = i;
354 size += 3;
355 return size;
356}
357
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