Space remote sensing technology refers to the use of remote sensing detection equipment to perceive and receive electromagnetic wave information emitted or reflected by objects from a distance, and analyze and process it into the required signals or images. At present, space remote sensing technology has penetrated into human work and life, and has been widely used in marine research, meteorological and climate research, forest resource exploration, geological and mineral exploration, crop yield estimation, and natural disaster detection.

Space remote sensing can be divided into active remote sensing and passive remote sensing based on its working mechanism, and can be divided into microwave detection and optical detection based on its detection spectrum. In general, microwave detection can be regarded as active remote sensing, while optical detection can be regarded as passive remote sensing.

The main principle of microwave detection is to use a microwave source to emit microwave signals, which return after coming into contact with the detection target, and then receive the returned microwave signals through remote sensing instruments for processing and application.

Optical detection, also known as photoelectric detection, uses photodetectors in the corresponding frequency band to receive radiation reflection and other information from the target. Through the inherent characteristics of the photodetector, the optical signal is converted into an electrical signal, which is then processed by the backend circuit.

Microwave detection and optical detection have a complementary relationship and are both applied in space remote sensing. But whether it is microwave detection or optical detection, it requires satellites carrying microwave/optical detection equipment to achieve the detection and perception of target objects. Due to the thick atmosphere around the Earth, it can be divided into the troposphere, stratosphere, mesosphere, ionosphere, and exosphere from the Earth's surface. Various particles in the atmosphere absorb and reflect celestial radiation and electromagnetic waves, which requires satellite remote sensing to rely on the atmospheric window band.

The atmospheric window band refers to the band that can maintain high transmittance in the atmosphere. Due to the reflection and absorption of radiation by various particles in the atmosphere, only certain spectral ranges of celestial radiation and electromagnetic waves can maintain high transmittance in the atmosphere. These spectral bands that can maintain high transmittance in the atmosphere are called atmospheric window bands.

The spectral bands of atmospheric window bands mainly include microwave band, infrared band, and visible light band. Microwave detection has the ability to work day and night, and is not easily affected by meteorological conditions and sunshine levels. However, the wavelength of microwaves is several hundred to several million times longer than that of visible light and infrared light, resulting in significant diffraction phenomena and lower spatial resolution. Optical detection precisely compensates for this drawback of microwave detection. Moreover, the infrared spectrum has a stronger ability to penetrate clouds, rain, and fog compared to visible light, which compensates for the significant impact of weather on visible light. In the infrared band, the atmospheric window of the common infrared band is generally divided into three atmospheric window bands: shortwave infrared, mid wave infrared, and longwave infrared.

Compared with medium and long waves, the short wave infrared band has shorter wavelengths and better detail resolution, which is conducive to high-resolution images with strong contrast. It can be easily used in conjunction with various spectral imaging devices, and its imaging effect is closer to visible light images rather than the thermal energy of infrared spectra. Due to the unique spectral characteristics of many substances in this band, the shortwave infrared band plays an irreplaceable role in many aspects of space to ground remote sensing, such as analysis of atmospheric composition, exploration of geological resources, detection of soil moisture, and so on.

InGaAs material has the characteristics of high sensitivity, high detection rate, high quantum efficiency in the short wave infrared band, and can operate at room temperature or near room temperature, making it an excellent choice for miniaturized, low-cost, and highly reliable short wave infrared detectors.

Our company has been committed to the development and application of short wave infrared cameras based on high-performance InGaAs detectors. Combining industry development with market demand, the Liding team continuously optimizes and iterates products, introducing new innovations. We have created a series of products that meet the needs of different user groups, with reliable performance and reasonable prices, and are highly trusted by industry users both domestically and internationally.

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Liding Economic Short Wave Infrared Camera is committed to providing users with lightweight, structurally small, and lightweight product solutions that are easy to integrate into various optoelectronic systems. For the convenience of users, professional customized services can be provided.

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The Liding wide spectral range shortwave infrared camera aims to provide users with high performance parameters that are currently developing in the industry. This series of cameras reduces the pixel size to 5um and improves the resolution to 1280 × 1024, while expanding the response wavelength range to 0.4-1.7 μ m. It can maintain a quantum efficiency of over 70% in the response wavelength range of 0.4-1.6 μ m without increasing the power consumption and volume weight of the body, which can meet the diverse usage needs of different user groups.

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The Liding Refrigeration Series provides users with high-performance refrigeration cameras that use thermoelectric cooling indium gallium arsenide detectors to effectively suppress chip dark current and improve imaging quality. This series can be equipped with an expandable InGaAs focal plane detector, which can extend the detection range to the 1.1 μ m-2.2 μ m band.

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The Liding scientific research series can provide users with short wave infrared cameras with research grade performance. Due to the high impact of temperature on detector imaging, the lower the cooling temperature of the detector, the higher the imaging quality of the detector. The Liding series adopts high-performance cooling design to lower the chip temperature to -80 ℃, thereby reducing dark current. It works under ultra long exposure time and the image can also have high signal-to-noise ratio. Provide specialized software that integrates multiple image algorithms, which is very suitable for research level user needs.

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The customized shortwave infrared camera from Liding is a customized service launched by the Liding team to ensure product performance indicators for various customers. We can customize products according to different user needs, improve the performance of products that customers focus on, and meet their needs in different fields. At present, the Liding team has customized multiple cameras suitable for customer project application needs for multiple clients, which has been recognized by many users.