mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-12-16 13:10:35 +00:00
114 lines
4.7 KiB
C++
114 lines
4.7 KiB
C++
/*!
|
|
* \file glonass_gnav_crc_test.cc
|
|
* \brief Test fot GLONASS GNAV CRC
|
|
* \author Carles Fernandez-Prades, 2020. cfernandez(at)cttc.es
|
|
*
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
|
|
* This file is part of GNSS-SDR.
|
|
*
|
|
* Copyright (C) 2020 (see AUTHORS file for a list of contributors)
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "glonass_gnav_navigation_message.h"
|
|
#include <bitset>
|
|
#include <iostream>
|
|
|
|
void to_bitset(const uint32_t from[3], std::bitset<GLONASS_GNAV_STRING_BITS> &to)
|
|
{
|
|
to.reset();
|
|
for (int k = 0; k < 3; k++)
|
|
{
|
|
std::bitset<GLONASS_GNAV_STRING_BITS> tmp(from[k]);
|
|
to |= (tmp << (k * 32));
|
|
}
|
|
}
|
|
|
|
|
|
TEST(GlonassCrcTest, GnssSdrCRCTest)
|
|
{
|
|
// test data
|
|
std::string string1Real_14_18_00("0000100000111001001001000011101010101100010101001000001001011101010101110011110110101");
|
|
std::string string1Real_14_18_30("0000100000111001001011000011101010101100010101001000001001011101010101110011100001010");
|
|
std::string string1Wrong_14_18_00("0000100000111001001001100011101010101100010101001000001001011101010101110011100001010");
|
|
const uint32_t test_case_good[][3] = {
|
|
/* Test data from libswiftnav (github.com/swift-nav/libswiftnav) */
|
|
/* First, simply test one GLO nav message received from Novatel,
|
|
* we trust Novatel, so no errors must be */
|
|
{0xc90cfb3e, 0x9743a301, 0x010749},
|
|
{0xdd39f5fc, 0x24542d0c, 0x021760},
|
|
{0x653bc7e9, 0x1e8ead92, 0x038006},
|
|
{0x60342dfc, 0x41000002, 0x0481c7},
|
|
{0x40000895, 0x00000003, 0x050d10},
|
|
{0x530a7ecf, 0x059c4415, 0x06b082},
|
|
{0xfd94beb6, 0x7a577e97, 0x070f46},
|
|
{0xba02de6f, 0x988e6814, 0x08b101},
|
|
{0x12064831, 0x87767698, 0x09e1a6},
|
|
{0xaf870be5, 0x54ef2617, 0x0ab286},
|
|
{0x0f06ba41, 0x9a3f2698, 0x0b8f7c},
|
|
{0x2f012204, 0xf0c3c81a, 0x0cb309},
|
|
{0x1c858601, 0x10c47e98, 0x0da065},
|
|
{0x5205980b, 0xf49abc1a, 0x0eb40e},
|
|
{0x15454437, 0x2504e698, 0x0f8c09},
|
|
/* Second, take 1st string from other GLO nav message and introduce an
|
|
* error in data bits */
|
|
{0xc90cfb81, 0x9743a301, 0x010748}, /* case 15, no errors */
|
|
};
|
|
const uint32_t test_case_correctable[][3] = {
|
|
/* single bit errors are correctable */
|
|
{0xc90cfb81, 0x9743a301, 0x110748},
|
|
{0xc90cfb81, 0x1743a301, 0x010748},
|
|
{0x490cfb81, 0x9743a301, 0x010748},
|
|
{0xc90cfb81, 0x9743a300, 0x010748},
|
|
{0xc90cfb81, 0x9743a301, 0x010749},
|
|
{0xc90cfb81, 0x9743a301, 0x000748},
|
|
};
|
|
const uint32_t test_case_uncorrectable[][3] = {
|
|
/* multiple bit errors are uncorrectable */
|
|
{0xc90c3b81, 0x9743a301, 0x010748},
|
|
{0xc90cfb81, 0x974fa301, 0x010748},
|
|
{0xc90cfb81, 0x9743a301, 0x01074b},
|
|
{0xc90cfb81, 0x9743a301, 0x010744},
|
|
{0xc90cfb81, 0x9aaaa301, 0x010748},
|
|
};
|
|
auto gnav_msg = Glonass_Gnav_Navigation_Message();
|
|
std::bitset<GLONASS_GNAV_STRING_BITS> bits;
|
|
bits = std::bitset<GLONASS_GNAV_STRING_BITS>(string1Real_14_18_00);
|
|
ASSERT_TRUE(gnav_msg.CRC_test(bits));
|
|
bits = std::bitset<GLONASS_GNAV_STRING_BITS>(string1Real_14_18_30);
|
|
ASSERT_TRUE(gnav_msg.CRC_test(bits));
|
|
bits = std::bitset<GLONASS_GNAV_STRING_BITS>(string1Wrong_14_18_00);
|
|
ASSERT_FALSE(gnav_msg.CRC_test(bits));
|
|
bits = std::bitset<GLONASS_GNAV_STRING_BITS>(string1Real_14_18_30);
|
|
for (int k = 8; k < 85; k++)
|
|
{
|
|
std::bitset<GLONASS_GNAV_STRING_BITS> corrupt_bits = bits;
|
|
corrupt_bits[k] = corrupt_bits[k] ? false : true;
|
|
ASSERT_TRUE(gnav_msg.CRC_test(corrupt_bits));
|
|
ASSERT_TRUE(corrupt_bits == bits);
|
|
}
|
|
for (unsigned k = 0; k < sizeof(test_case_good) / sizeof(test_case_good[0]); k++)
|
|
{
|
|
to_bitset(test_case_good[k], bits);
|
|
ASSERT_TRUE(gnav_msg.CRC_test(bits));
|
|
}
|
|
for (unsigned k = 0; k < sizeof(test_case_correctable) / sizeof(test_case_correctable[0]); k++)
|
|
{
|
|
std::bitset<GLONASS_GNAV_STRING_BITS> corrupt_bits;
|
|
to_bitset(test_case_correctable[k], corrupt_bits);
|
|
ASSERT_TRUE(gnav_msg.CRC_test(corrupt_bits));
|
|
ASSERT_TRUE(corrupt_bits == bits);
|
|
}
|
|
for (unsigned k = 0; k < sizeof(test_case_uncorrectable) / sizeof(test_case_uncorrectable[0]); k++)
|
|
{
|
|
std::bitset<GLONASS_GNAV_STRING_BITS> corrupt_bits;
|
|
to_bitset(test_case_uncorrectable[k], corrupt_bits);
|
|
ASSERT_FALSE(gnav_msg.CRC_test(corrupt_bits));
|
|
}
|
|
}
|